What cell type in sponges is responsible for producing the water current through the sponge?

Answers

Answer 1

Choanocytes is the cell type that is responsible for water current for the sponge.

Sponges are unusual animals in that they lack definite organs to carry out their various functions. The most important structure is the system of canals and chambers, called a water-current system, through which water circulates to bring food and oxygen to the sponge. The water-current system also helps disperse gametes and larvae and remove wastes.The essential elements of the water-current system include the pores, or ostia, through which water enters the sponge (incurrent system).the choanocytes, or collar cells, which are flagellated cells that generate water currents and capture food; and the oscula, openings through which water is expelled (excurrent system).

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Related Questions

What three continents are partly in the northern hemisphere and partly in the southern hemisphere.

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South America, Africa, and Asia are the three continents are partly in the northern hemisphere and partly in the southern hemisphere.

What is the difference between the northern and southern hemispheres?

In the Southern Hemisphere:

The Southern Hemisphere is the half of the Earth south of the Equator. It includes all or parts of five continents (Antarctica, Australia, approximately 90% of South America, approximately

In the Northern Hemisphere:

The Northern Hemisphere is the half of Earth north of the Equator; for other planets in the Solar System, north is defined as being in the same celestial hemisphere as Earth's North Pole relative to the invariable plane of the solar system.

The Northern Hemisphere includes North America, the northern half of South America, Europe, the northern two-thirds of Africa, and the majority of Asia, while the Southern Hemisphere includes the majority of South America, one-third of Africa, Australia, Antarctica, and some Asian islands.

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The presence of glossopteris leaves and mesosaurus on disconnected continents are strong _______ evidence for continental dri

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The presence of glossopteris leaves and mesosaurus on disconnected continents are strong fossil evidence for continental drift.

There are numerous examples of fossils found only on different continents, indicating that the continents were once connected. Only in southern Africa and eastern South America can bones of Mesosaurus, a crocodile-like reptile that lived 286 to 258 million years ago, be found. Traveling by swimming between continents would have been physically impossible for Mesosaurus.

This shows that during the Early Permian, South America and Africa were connected. The Early Permian (299 million years ago) saw the evolution of Glossopteris, a woody, seed-bearing shrub or tree that went on to dominate the era and persisted until the end of the Permian. Australia, South Africa, South America, India, and Antarctica all contain its fossil remains.

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The fact that people living farther away from a large city are less likely to subscribe to its newspaper is an example of what phenomena of spatial interaction?

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The fact that people living farther away from a large city are less likely to subscribe to its newspaper is an example of the distance decay phenomena of spatial interaction.

Spatial interactions have also been studied in terms of inland and hierarchical. Linkage and node systems give rise to tributary or inland regional groups that, in turn, can be organized into hierarchical networks. Some of the earliest geographic studies of spatial interactions focused on the delineation of local hinterlands.

These can be based on tourism, retail market sector, social tourism, leisure travel, press circulation, or freight. The greater Chicago metropolitan area, primarily defined by its commuting relationships, also includes a number of smaller cities, each with its own retail and commuter hinterland. The result is a nice and complex hierarchy of Spatial interactions.

Nationwide, Chicago is itself integrated into several hierarchies. For example, in terms of air passenger traffic, New York has become the most dominant hub. During the 1990s, it was the main passenger source not only for a group of adjoining cities but also for larger cities further afield such as Chicago, Atlanta, and Los Angeles.

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This is a _____ map?

Answers

Answer:

special purpose

Explanation:

It is used to measure cm of rain of different regions of a country or a place.

What is the perimeter of triangle ? Round answers to the nearest tenth.

Answers

Answer:

the sum of all it's three sides

Casey's left hemisphere is damaged. casey is most likely to experience difficulty with:_____.

Answers

Casey's left hemisphere is damaged. casey is most likely to experience difficulty with understanding a step in a recipe.

Our capacity to use and comprehend language, particularly reading and writing, is significantly influenced by the left hemisphere of the brain. It is also important for speech, problem-solving, and controlling the right side of the body. Left hemisphere brain damage frequently results in issues with movement, cognition, and communication in affected individuals.

Damage to the left hemisphere of the brain makes it difficult to communicate and understand language. People can have difficulty in planning, organizing, and remembering. Rehabilitation, including but not limited to speech therapy, physical therapy, and occupational therapy, has been shown to benefit people with brain injuries.

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Is it true forest fires followed by heavy rains are likely to result in severe mud and debris flows

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Forest fires followed with the aid of heavy rains are likely to result in extreme mud and debris flows: yes, it is genuine. Saturating a slope with water has a tendency to preserve unconsolidated grains together and for this reason, helps stabilize slopes.

A wildfire, Forest fire, bushfire, wildland fire, or rural hearth is an unplanned, uncontrolled, and unpredictable hearth in a place of flammable plants starting in rural and urban regions. some wooded area ecosystems in their herbal state depend upon a wildfire. herbal reasons - Many woodland fires begin from natural reasons which include lightning which set bushes on fire. however, rain extinguishes such fires without inflicting tons of damage. excessive atmospheric temperatures and dryness (low humidity) provide favorable circumstances for a hearth to begin.

Wildfire also referred to as Forest fires, bush or vegetation hearth can be defined as any uncontrolled and non-prescribed combustion or burning of plant life in a herbal setting inclusive of a forest, grassland, brush land or tundra, which consumes the natural fuels and spreads based totally on environmental situations (e.g., wind, topography).

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How do you think waves from an earthquake move differently at the surface of the earth and through the body of the earth? why do you think this might be?

Answers

The Earth's deeper layers can be traversed by body waves, while surface waves can only flow in a ripple-like fashion across the planet's surface. Both surface and body waves are released during an earthquake.

How many types of earthquake waves?

Seismic waves can be divided into three categories: P, S, and surface waves. P and S waves are commonly referred to as body waves since they can move freely through the earth's body and are not constrained to the surface. Sound waves passing through rock create P waves.

What is shadow zone in earthquake?

The shadow zone is the region of the earth between 104 and 140 degrees angular distance from a specific earthquake that does not receive any direct P waves. The liquid core completely stops S waves, while also bending (refracting) P waves, creating the shadow zone.

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Who searched for a passage through the americas under the sponsorship of the dutch?.

Answers

Answer:

Henry Hudson

Explanation:

In the late 16th century,English Henry Hudson made two unsuccessful silent voyages in search of an ice-free passage Asia.

What reasons might explain why john reacted by falling to the ground when he saw the glorified son of god whom he had known so intimately on earth?

Answers

In a lonely place with no companions, this vision will probably startle him reasons might explain why john reacted by falling to the ground when he saw the glorified son of the god whom he had known so intimately on earth.

Intimate means intimacy. Small restaurants are said to be intimate. This adjective means very friendly, very personal, or private because you sit close to others and your best friend is considered your close friend.

A intimately is defined as someone who is very close to you. An example of intimacy is sharing your feelings with a friend. A Confidant is someone to whom you confide personal information. An a best friend example is your best friend.

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The lower portion of the _____ holds enough ozone gas to filter out about 95% of the sun's harmful ultraviolet radiation.

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The lower portion of the stratosphere holds enough ozone gas to filter out about 95% of the sun's harmful ultraviolet radiation.

here Ozone (O3) is a highly reactive gas composed of three oxygen atoms. It is both a natural and a man-made product that occurs in the Earth's upper atmosphere. (the stratosphere) and lower atmosphere (the troposphere). Depending on where it is in the atmosphere, ozone affects life on Earth in either good or bad ways.The ozone layer acts as a shield for life on Earth. Ozone is good at trapping a type of radiation called ultraviolet radiation, or UV light, which can penetrate organisms' protective layers, like skin, damaging DNA molecules in plants and animals.even when ozone is inhaled, it can damage the lungs. Relatively low amounts of ozone can cause chest pain, coughing, shortness of breath and, throat irritation. It may also worsen chronic respiratory diseases such as asthma as well as compromise the ability of the body to fight respiratory infections.

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If the fluid flowing through a rock is changed from water to oil, the hydraulic conductivity will change but the permeability will remain the same. true /false

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If the fluid flowing through a rock is changed from water to oil, the hydraulic conductivity will change but the permeability will remain the same. True.

here Hydraulic conductivity of the material can be defined as the ability of the fluid to pass through the pores and fractured rocks. The conductivity depends on the type of the soils that are found in the region.

where as Permeability is a measure of the ease of passage of liquids or gases or specific chemicals through the material. Permeability is determined by applying a head and determining the depth of penetration or the amount of liquid or gas passing through the sample.Hydraulic conductivity, sometimes called permeability, expresses how fast water flows through the soil voids; it is a function of the texture, grain size and distribution, density, as well as the macrostructure of the soil. For most engineering problems involving seepage and drainage of soils, Darcy's Law is valid.

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help me please help me please.l​

Answers

Answer:

B

Explanation:

Metals (like copper and aluminium) are good conductors of heat and electricity, while nonmetals (such as phosphorus and sulfur) are insulators.

B Metals (like copper and aluminium) are good
conductors of heat and electricity, while
nonmetals (such as phosphorus and sulfur)
are insulators.

Earth's weather results from the transport of heat energy. most of this heat energy comes from?

Answers

Answer:Energy from the sun is transferred through space and through the earth's atmosphere to the earth's surface. Since this energy warms the earth's surface and atmosphere, some of it is or becomes heat energy. There are three ways heat is transferred into and through the atmosphere: radiation.

Explanation:

When you toss a projectile sideways, it curves as it falls. it will be an earth satellite if the curve it makes _______.

Answers

When you toss a projectile sideways, it curves as it falls. it will be an earth satellite if the curve it makes it matches the curved surface of the Earth.

projectiles travel with a parabolic trajectory due to the fact that the downward force of gravity accelerates them downward from their otherwise straight-line, gravity-free trajectory.

The force of gravity does not affect the horizontal component of motion; a projectile maintains a constant horizontal velocity since there are no horizontal forces acting upon it.

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The naturalist and father of zoogeography Alfred Russel Wallace noted a distinct difference in the fauna between several islands in the Malay Archipelago (present-day Indonesia).He used these differences to delineate the boundary between the Australian and Oriental biogeographic realms.Which of the following best describes the reason for these differences?
A) Aboriginal tribes in Australia have greatly altered the fauna of Australia relative to the Oriental realm.
B) A deep ocean barrier inhibited dispersal between the two realms.
C) The environments of Australia and Asia are completely different,despite their relative close proximity.
D) Asia and European traders interacted for centuries prior to Wallace's discovery.Among the results of this interaction was an exchange of European (Palearctic)fauna and Oriental fauna.

Answers

The correct answer is Option C) The environments of Australia and Asia are completely different, despite their relative close proximity.

The naturalist and father of zoo - geography Alfred Russel Wallace noted a distinct difference in the fauna between several islands in the Malay Archipelago (present-day Indonesia). He used these differences to delineate the boundary between the Australian and Oriental biogeographic realms. The reason behind this difference is that the environments of Australia and Asia are completely different, despite they are in a very close proximity relatively.

Why is the environment of Australia and Asia different?

The Wallace line is a boundary line drawn by British naturalist Alfred Russel Wallace on the basis of difference in fauna in the year 1859 between Asia and Australia. The reason and the root cause behind this faunal distinction is that the ancient supercontinent named Gondwana was separated entirely from other parts of the world when Pangaea broke up. The current Australia and the smaller islands were a part of Gondwana and this is why their fauna is so different from that of South - East Asia, even if they are very close together relatively.

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Based on the position of the houses on continent a, which one is built in the safest location?

Answers

Based on the position of the houses on continent a, House D is built in the safest location.

What techniques are employed globally to assess risk?Globally, there are different techniques for evaluating dangers. The World Risk Report (WRR), a yearly report produced by the Bündnis Entwicklung Hilft and the Institute for International Law of Peace and Armed Conflict (IFHV), is one of them. Its objectives include "highlighting the links between natural events, climate change, development, and preparedness at a global level and drawing future-oriented conclusions regarding relief measures, policies, and reporting." It employs a total of 27 indicators, which are divided into five distinct components.

The following five factors influence how the WRR classifies various nations and regions:a town or area's exposure to the effects of one or more natural hazards is referred to as being in a hazardous or exposed state;The socioeconomic, infrastructural, and environmental variables that make a community or region more exposed to the consequences of natural hazards are collectively referred to as vulnerability;Susceptibility is the likelihood that a town or region would experience negative effects from a natural disaster due to features of the public infrastructure or socioeconomic situations (such as poverty or starvation);The community's capacity to cope with the repercussions of a natural disaster, reduce negative effects, and hasten recovery is represented by its coping capacities. The opposite value, namely a lack of coping mechanisms, is employed for WRI purposes;Adaptive capacity - reflect the long-term tactics employed by nations to more effectively deal with the adverse effects of (re)occurring natural disasters.Hence, based on the position of the houses on continent a, House D is built in the safest location.

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The governments of both the United States and Canada have all of the following except:

constitution
supreme court
cabinet
all of the above

Answers

Answer:

D all of the above

Explanation:

Which hypothesis best explains the continuous bend in the hawaiian islands-emperor seamount chain?

Answers

The direction of plate motion shifted over time over a stationary mantle plume (hot spot)  hypothesis best explains the continuous bend in the Hawaiian islands-emperor seamount chain.

The continuous bend in the Hawaiian islands-emperor seamount chain is best explained by the theory that plate motion changed through time over a stationary mantle plume (hot spot).  A mountain range in the Pacific Ocean that is primarily under water but rises above sea level in Hawaii is known as the Hawaiian-Emperor seamount chain.

Together, they form a vast underwater mountain region of islands and intervening seamounts, atolls, shallows, banks, and reefs along a line trending southeast to northwest beneath the northern Pacific Ocean. It is made up of the Hawaiian ridge, consisting of the islands of the Hawaiian chain northwest to Kure Atoll, and the Emperor Seamounts.

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Discuss your interest in environmental science. Which aspects of environmental science most fascinate you? How are your personal values related to your interest in environmental science? If you could choose one job or career related to environmental science, what would it be?

Answers

My interest is environmental science is to know more about the environment.

My personal values relates to my interest in environmental science because I love the environment, nature and I'll love to know more about the topic.

If I could choose one job or career related to environmental science, it'll be an environmental scientist.

How to explain the information?

I will like to know more about environmental issues including climate change, global warming, ozone layer loss, acid rains, and effects on biodiversity and marine life through the study of environmental science. These issues are not simply local or national issues; they also affect the entire planet.

I'll like to be an environmental scientist.

Natural science expertise is used by environmental scientists to safeguard the environment. Environmental experts and scientists apply their understanding of the natural sciences to safeguard both human health and the environment. They might clean up dirty areas, offer legislators advice, or collaborate with business to cut waste.

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In what location on earth could you not use your solar powered calculator at any time at all during the course of a day in june?

Answers

In South Pole you can not use your solar powered calculator at any time at all during the course of a day in june.

The latitude of a certain site is one of the key variables that affects sun radiation there. In general, the level of solar radiation will be lower the higher the latitude. The sun's rays are dispersed over a wider region as we move farther from the equator, and this is solely due to the shape of the Earth.

As we approach closer to the polar regions, the amount of solar energy that falls on a certain area inevitably decreases. Due to a combination of a very high latitude and a largely clouded sky brought on by the local microclimate, there is relatively little solar radiation near the south pole.

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The means by which individuals hold their claims on real assets in a well-developed economy are.

Answers

Answer:

Not sure if this is a multiple choice question that you have but the answer would be Financial Assets

Explanation:

Just trust me on this and good luck with your work!  = 0 w 0 =

Excepting hong kong (which is 100% urban) which nation is the most urban in east asia?

Answers

Japan follows Hong Kong to be the second most urbanized country in East Asia with an urban population of 91.9%.

Why is East Asia urbanizing rapidly?

East Asia along with the Pacific is leading the world in urbanizing its population rapidly. The average annual urbanization rate is 3% for both. The reason behind the rapid urbanization of East Asia is modernization, industrialization and economic growth. A high rate of industrialization and economic development goes hand in hand with rapid urbanization of any region of the world. The main reasons of migration is the commercialization, social benefits and services, better opportunities for employment and the transformation from rural to urban.

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If the surface pressures are the same, a column of warm air will be ______ than a column of cold air.

Answers

Answer:

where the temperatures are colder, a given pressure surface will have a lower height than if the same pressure surface was located in warmer air.

Explanation:

To achieve change in the coal fields of eastern pennsylvania, the molly maguires used?

Answers

To achieve change in the coal fields of eastern Pennsylvania, the Molly Maguires used intimidation and violence.

The Molly Maguires utilized intimidation and violence to effect change in eastern Pennsylvania's coal fields. The Molly Maguires were a secretive organization founded in Ireland in the 19th century that was also active in Liverpool and some areas of the Eastern United States. They are best known for their activity on behalf of Irish-American and Irish immigrant coal miners in Pennsylvania.

Twenty accused Molly Maguires members were found guilty of murder and other offences after a string of frequently violent fights, and they were hanged in 1877 and 1878. Local Pennsylvanian lore continues to reference this event, and historians continue to disagree about the details.

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Which area once used its advantage of proximity to natural resources to grow its industrial might?
Group of answer choices

West

Northwest

Southeast

Northeast

Answers

Answer:Northeast

Explanation:

As a giant cloud of gas collapses due to gravity, you would expect its rate of rotation to:______

Answers

The answer would be as a giant cloud of gas collapses due to gravity, you would expect its rate of rotation to increase.

This will happen due to the law of conservation of angular momentum.

What is the law of conservation of angular momentum in geographical science?

Momentum refers to the product of mass and the velocity of the object. Angular momentum, refers to the same but it deals with spinning or rotating objects. It is a vector quantity and thus it implies that direction is also considered here along with the magnitude.

Law of conservation of angular momentum means that the momentum of the rotating object is not changing unless any kind of external torque is applied.

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3. If Australia is in winter, what season is the U.S.A. in?

Answers

Answer:

summer

Explanation:

hope this helps.

In the chart below, which represents the four stages of demographic transition identify the country and where it is located which is in that stage and briefly describe how it got to that stage. Use the DTM samples and population pyramids on pages 56 & 57 to help you with this

Answers

Argentina in the South America represents the four stages of demographic transition. Argentina has maintained a strong economy, keeping on par with Western Europe and North America.

Larger parts of Argentina's development in economic and social mobility has been consistent, together with the technological and medical advancement that allow for a quite rapid progression through Stages 1-3 of the DTM.

By industrialization, cities became the key area of life, resulting to internal migration as people move from rural to urban areas. Because of the limited space within cities, smaller family size becomes an indirect factor for urbanization.

Argentina’s transition to Stage 4 is distinct compared to the other parts of South America because of how early it was accomplished.

What is demographic transition?

Demographic transition is a concept which means the historical shift from high birth rates and high death rates in societies with minimal technology, education and economic development, to low birth rates and low death rates in societies with advanced technology, education and economic development, as well as the stages between these two scenarios.

Therefore, the correct answer is as given above.

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A mountain beneath the ocean that does not reach the surface is called a(n)?

Answers

Answer: seamounts

Explanation:

Answer:

Seamount

Explanation:

A seamount is a large geologic landform that rises from the ocean floor but that does not reach to the water's surface, and  is not an island, islet or cliff-rock. Seamounts are typically formed from extinct volcanoes that rise abruptly! Brain?

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The fact that people have a tendency to not report incidents of wrongdoing if they believe others will report it is called:______. Colonial loyalists believed that the british constitution was more likely to __________ than the american revolutionary leadership. Hi please help me with this questionUsing the graph of f, determine f(4). when x=6 and y=3, which of the expressions below will be greater than 100? If one object has a greater speed than a second object, does the first necessarily have a greater acceleration? explain, using examples. All life shares dna as the hereditary material. from an evolutionary perspective, why do you think this is the case? To pay for a home improvement project that totals $9,000, Genesis is choosing between taking out a simple interest bank loan at 9% for 3 years or paying with a credit card that compounds monthly at an annual rate of 18% for 7 years. Which plan would give Genesis the lowest monthly payment? The monthly credit card payment would be $295, which is lower than the monthly payment on the bank loan. The monthly payment on a bank loan would be $272.50, which is lower than the monthly credit card payment. The monthly payment on a bank loan would be $317.50, which is lower than the monthly credit card payment. The monthly credit card payment would be $374.21, which is lower than the monthly payment on the bank loan. A client is prescribed misoprostol. the nurse would expect to administer this drug by which route? Which branch of chemistry is concerned with the chemical processes that occur within living organisms? A. Physical B. Inorganic C. Biochemistry D. Organic Diffusion vs Osmosis in a ven digram If volume of a water sample is 11.3 ml and the mass is 11.349 g, what is the exact density of the sample? If the maximum possible accuracy in measuring the positon of a particle increases the naximum possible accuracy in measuring it velocity will? Any tips for doing complicated order of operation problems. Algebra 2 The approach that makes use of rational and systematic reasoning to answer the great questions of life and existence is known as:________ What is the difference quotient of the function, g (x) = startroot x endroot, x greater-than-or-equal-to 0? One-half second after starting from rest, a freely falling object will have a speed of about:_________a. 20 m/s. b. 10 m/s. c. 5 m/s. d. 2.5 m/s. e. none of these Communication through a telephone call is considered a part of a(n)______ ________ communication channel. Please help ASAP if you can To be successful when starting a new exercise program, it is recommended that you __________. What environmental force involves developing applications from science or engineering research?