Which statement is true of all scientific laws?
OA. They were established by scientists hundreds of years ago.
OB. They are factual explanations that cannot be questioned.
C. They describe nature through the past, present, and future.
OD. They must be based on mathematical formulas to be valid.
Answers
C
They describe nature through the past , and future
Related Questions
A psychological disorder is characterized in part by A) stability in everyday functioning B ) cognitive , behavioral , or emotional dysfunction C ) behavior that is common in the culture D ) a typical response to an abnormal event
Answers
A psychological disorder is something out of the ordinary.
It won’t be A if you are stable.
Not C if it’s normal behaviour.
Not D if the response is unexpected.
Want it to be the end of unstable, abnormal, untypical responses to normal events
Suppose that goats have one gene that codes for color, where A is brown and a is white. The goats also have another gene that codes for height, where B is tall and b is short. If these two genes are unlinked, what is the probability that a cross between Aa Bb × Aa bb parents will produce three out of five offspring that are brown and short? Enter your answer as a decimal, rather than as a percentage.
probability:
Answers
The probability that 3 out of 5 offspring from the cross will be brown and short does not exist or is zero.
Dihybrid crossingA represents brown and a represents white.
B is tall while b is short.
AaBb x Aabb
Offspring
A_B_ (brown and tall) = 6/16 or 3/8
A_bb (brown and short) = 6/16 or 3/8
aaB_ (white and tall) = 2/16 or 1/8
aabb (white and short) = 2/16 or 1/8
In other words, the probability of producing offspring that are brown and short is 3/8.
Thus, the probability that 3 out of 5 offspring from the cross will be brown and short does not exist or is zero.
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A cinder cone volcano easily erodes because it is made of ash and other volcanic debris. This indicates that its eruption is primarily _____.
A) explosive with a pyroclastic flow B) non-explosive with a pyroclastic flow C) explosive with pyroclastic and lava flows D) non-explosive with a lava flow
PLEASE HELP GIVING BRAINLIEST TO FIRST CORRECT ANSWER
Answers
A cinder cone volcano easily erodes because it is made of ash and other volcanic debris. This indicates that its eruption is primarily explosive with a pyroclastic flow.
Volcanoes with cinder cones are the most basic. They are made of lava chunks and blobs that were ejected from a single vent.
A single vent is surrounded by a conical formation of ash, tephra, and solidified lava called a cinder cone. After being ejected into the air from the vent, volcanic debris breaks apart and falls to the ground, forming the cone. As the ash and lava cool and solidify, they form a cone around the vent.
The height of a cinder cone can range from 10 to hundreds of meters, and its summit frequently features a bowl-shaped crater. They differ from spatter cones, which are made of agglomerated volcanic bombs, in that they are made of loose pyroclastic material (cinder or scoria) and hence eruption is primarily explosive with a pyroclastic flow.
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Biodiversity is the assortment, or variety, of living things in an ecosystem
Answers
Explanation:
Biodiversity is the variety of life forms in specific ecosystem but also biodiversity is the alignment between the them.
How do chromosomes line up differently in meiosis compared to mitosis? A. They line up in a straight line of 92 chromosomes. B. They lineap with their duplicated homologous pair to form a tetrad. C. They line up with the duplicated chromosome one on top of the other. D. They line up with the chromosome from the same parent.
Answers
Is the C. They line up with the duplicated chromosome one on top of the other
Chromosomes line up differently in meiosis compared to mitosis as they line up with the duplicated chromosome one on top of the other. Therefore, the correct option is C.
During mitosis the chromosomes align differently than during meiosis. Homologous chromosomes pair up and join during the first stage of meiosis, known as prophase I. Two sister chromatids, which are identical copies made by DNA replication, make up each homologous chromosome. A quadrivalent or bivalent is the name of the structure formed by these paired homologous chromosomes.
Therefore, the correct option is C.
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Which two activities are examples of the work of engineers rather than of
scientists?
A. Developing a new technique to measure water purity
B. Designing materials to absorb water
C. Studying how wildlife is affected by pollution
D. Comparing root structures in different kinds of plants
Answers
Reason: all the others involve research and the scientific process, this one doesn’t.
Someone please help, I’m supposed to figure out the meaning of the words using a list of prefix/suffixes
Answers
HELP ...BRAILIEST
If a cell was producing too much energy, which component would step in to hold the energy until it was needed?
Question 5 options:
rough endoplasmic reticulum
vesicles
lysosomes
mitochondria
Answers
Answer:
mitochondria
Explanation:
is the answer
Examine the data shown in Figures 2 and 3. Carefully compare the DNA methylation profiles from the 3-year-old twins versus the 50-year-old twins and summarize your observations. Which set of twins (3-year-old or 50-year-old) have the most similar DNA methylation profiles? Provide a brief explanation of your observations.
Answers
A DNA base is altered biochemically during DNA methylation, which typically takes place during gametogenesis and after fertilization.
The DNA methyltransferases DNMT1, DNMT3A, and DNMT3B keep methylation marks in tact after each cell division. Although the majority of methylation marks are stable, there is typically 10% to 20% variation over time. Ly cytosine undergoes enzymatic 5-carbon methylation. DNA methylation represents the best characterized form of epigenetic modification. DNA methylation is written onto the genome by two methyltransferases, known as Dnmt3a and Dnmt3b.These enzymes catalyze the addition . Aging is often marked by the establishment of global hypomethylation and regions of CpG island hypermethylation. These changes in the epigenetic landscape may contribute to aging by adversely affecting genomic stability and gene regulation. Thus, DNA methylation has its affect on aging and thus should be observed carefully.Learn more about DNA here:
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Two containers of water and their starting conditions are shown below. . How will the temperatures of the water in the containers compare if an equal amount of heat is absorbed by each container of water without boiling? A. Both water temperatures will increase, but container B's will increase more. B. Both water temperatures will increase by the same amount. C. Both water temperatures will increase, but container A's will increase more. D. Both water temperatures will decrease, but container B's will decrease more.
Answers
Answer:
The answer is A: Both water temperatures will increase, but container B's will increase more.
If an equal amount of heat is absorbed by each container of water without boiling then both water temperatures will increase, but container B's will increase more ad is denoted as option A.
What is Temperature?This is referred to as the degree of hotness or coldness of a substance and is influenced by thermal energy It is usually measured with a thermometer and water absorbs it at different rates.
In the diagram below, both container of water will increase but to varying degrees. However, container B which has less water means that its temperature will increase more than container A and is therefore denoted as option A.
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are humans subject to environmental resistance in the same sense that other organisms are?
Answers
Answer:
the sum of the environmental factors (such as drought, mineral deficiencies, and competition) that tend to restrict the biotic potential of an organism or kind of organism and impose a limit on numerical increase.
hydrogen bonds are similar to ionic bonds because
Answers
Answer:
they both involve the attraction between opposite charges.
Explanation:
no explanation
i need help!!!!!!!!!!
Answers
Therefore density here=3g/12mL=0.25g/mL
Carbapenems are b lactam antibiotics, as are penicillins and cephalosporins, which work by inhibiting cell wall biosynthesis in bacteria. In recent years, more cases, mostly in patients who have been hospitalized for a long period of time, of bacteria showing resistance to Carbapenems have been reported. In these patients, this drug could no long control bacterial infections. Check ALL the statements that are correct:
Question 1 options: Bacteria that are resistant to Carbapenems did not exist before these drugs were used.
Carbapenems are the selecting agent Bacteria become resistant only after they come into contact with Carbapenems
This development of drug resistance by bacteria is an example of evolution
Non-resistant bacteria become resistant strains via mutation
The rate of mutation (to resistant strains) is always increased by the use of Carbapenems
The rate of survival among resistant bacteria is always increased by the use of Carbapenems
The change from non-resistant to resistant bacterial strains are not due to changes in genes.
Cabapenem-resistant bacteria may come into existence if Carbapenems are not used.
Answers
Only once bacteria come into touch with carbapenems do they develop resistance. This bacterial drug resistance is an illustration of how non-resistant bacteria can mutate into resistant strains.
The original "carbapenem," thienamycin, would become the parent or model compound for all subsequent carbapenems. Recent research demonstrates unequivocally that carbapenem resistance is growing globally. In particular when porin losses occur, excessive synthesis of weak carbapenemases as CMY-10 and PDC Beta-lactamases might result in carbapenem resistance. Gram-positive bacteria develop resistance to carbapenems and other beta-lactam antibiotics through mutation-derived modifications to their PBPs, whereas Gram-negative bacteria frequently enlist the help of additional defense mechanisms to combat the effects of these drugs.
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why do plants excrete more carbon dioxide at night than during the day?
A. Cellular respiration occurs only at night and not during the day
B. Cellular respiration occurs at a faster rate at night then during the day
C. Photosynthesis uses some of the carbon dioxide released during the day
D. The light-independent reaction of photosynthesis that releases carbon dioxide occurs at night
Answers
Answer:
C
Explanation:
they cannot do photosynthesis at night.
Which of the following phrases describes
the term biodiversity? luo
A. species that have become extinct
B. the animals that live in an area
C. species that look different from one
another
D. the number and variety of species that
e live in an area
Answers
Answer:
The answer is D.
Explanation:
Because biodiversity essentially means the different kinds of animals you'll find in a singular (one) area.
A virus is isolated, and individual virions appear spherical. what type of virus is this?
Answers
What is an atom called that has LOST electrons?
Answers
what would happen if herbivores were removed in a food chain
Answers
What similarities and differences do you see between the bacteria in the human cells
Answers
Answer: The similarites are that both bacteria and human cells contain the cytoplasm in which the cell organelle is present. DNA is present as genetic material inside the cells of bacteria and human cells. The ribosomes are present inside the cells of bacteria and human cells. DNA replication, transcription, and translation occur in both the cell of humans as well as bacteria.
While the differences are well developed nucleus with nuclear envelope is present inside the human cell and absent in the bacteria cell. The size of ribosomes differ in human and bacterial cell. Transcription and translation is coupled in bacterial cell whereas separate in human cell. The cell membrane bound organelle is present in human and absent in bacteria.
Explanation:
1. What is the change in volume from 22 degrees Celsius to 23 degrees Celsius?
Answers
Answer:
According to Charles' Law.
Volume is directly proportional to Temperature.
So if temperature increases from 22degree Celsius to 23degree Celsius, then Volume will increase from its initial.
The change in volume from 22 degrees Celsius to 23 degrees Celsius is seen because the change in temperature is directly proportional to the change in volume and the volume increases.
What is the role of temperature?The role of temperature is important as the low temperature changes the state that is from the liquid to the solid while the high temperature changes the state of matter that is from the liquid to the gas. The temperature of the earth is continuously increasing, so that the polar ice is melting and the water level on the earth is increasing. The increase of one degree is significant in the earth as the ice melts into the water, and that harms the animals and plants present in the different habitats.
Hence, the change in volume from 22 degrees Celsius to 23 degrees Celsius is seen because the change in temperature is directly proportional to the change in volume and the volume increases.
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Which statement is true? DNA forms a double helix; RNA consists of a single strand. DNA forms a single strand; RNA consists of a double helix. RNA forms a double strand; DNA consists of a single helix. RNA forms a double strand; DNA consists of a double helix
Answers
RNA forms a double strand; DNA consists of a single helix. RNA forms a double strand -TRUE
Perhaps the most significant molecules in cell biology are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), which store and read the genetic information that is the basis of all life. Both are linear polymers made up of sugars, phosphates, and bases, but they differ in a few significant ways.
These differences allow the two molecules to cooperate and perform their fundamental functions. Here, we examine 5 significant distinctions between DNA and RNA. All genetic information is encoded in DNA, which also serves as the building block for all biological life.
And only in the near future. In the long run, DNA serves as a storage medium, a biological flash drive that enables the transmission of the genetic code from one generation to the next.
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Which statement is NOT true about the tools scientists use to collect quantitative data?
A meter stick is used to measure distance or length.
An electronic scale is used to measure weight.
A thermometer is used to measure temperature.
A triple beam balance is used to measure electric current.
Answers
Answer:
triple beam
Explanation:
it's used to measure balance not electric charge
1. A complex individual that consists of organ systems is known as a/an
A. community.
B. population.
C. organism.
D. tissue.
E. species.
2. All of the ecosystems on the planet together are called the
A. atmosphere.
B. hydrosphere.
C. biosphere.
D. lithosphere.
E. stratosphere.
3. Which of the following statements most correctly defines homeostasis?
A. All living organisms are alike.
B. Living organisms do not change much over time.
C. Human beings and other animals acquire materials and energy when they eat food.
D. It takes energy to maintain the organization of the cell.
E. Cells and organisms must be able to maintain a fairly constant internal environment.
4. Four million years ago, horses were rather small compared to today's horses and had relatively stocky bodies
with a straight shoulder and thick neck. This statement is an example of which biological concept?
A. metabolism
B. evolution
C. development
D. homeostasis
E. reproduction
5. Which of the following is not a basic characteristic of all living things?
A. Living things are organized.
B. Living things acquire materials and energy.
C. Living things contain a nucleus and organelles.
D. Living things reproduce.
E. Living things grow and develop.
6. Choose the CORRECT order (1-5) of increasing complexity/organization.
A. (1) tissues, (2) organ systems, (3) cells, (4) organs, (5) organism
B. (1) cells, (2) organ systems, (3) tissues, (4) organs, (5) organism
C. (1) tissues, (2) organs, (3) organ systems, (4) cells, (5) organism
D. (1) cells, (2) tissues, (3) organs, (4) organ systems, (5) organism
E. (1) organism, (2) organ systems, (3) organs, (4) tissues, (5) cells
Answers
Answer:
Hi dude.These are the answers
Explanation:
1C
2C
3E
4B
5C
6D
What does PAN stand for?
Answers
Answer:
In the fields of molecular biology and genetics, a pan-genome (pangenome or supragenome) is the entire set of genes from all strains within a clade. More generally, it is the union of all the genomes of a clade.
Explanation:
I Need help please this is for biology
Answers
The order the organisms will appear during primary succession would be lichens -->mosses-->grasses and annual flowers--->bushes and shrubs-->trees.
What is succession?Succession refers to the gradual changes to the community of organisms in an ecosystem until a stable community is reached.
Succession can be primary or secondary.
Primary succession happens when a community that has never held any life before gets newly colonized by life.
Secondary succession happens when a community that already holds life experiences a major disturbance and needs to start adjusting itself to resume changes again.
The colonizers in primary successions are called pioneer species. Due to limited nutrients and soils, pioneer species must have low requirements.
Thus, the order of appearance during primary succession would be the order or increase in growth requirements.
lichens -->mosses-->grasses and annual flowers--->bushes and shrubs-->trees.
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The shoulder is ___ to the cervical region
The ankle is ___ to the knee
The abdominal region is ___ to the sternal region
Answers
Answer:
Since the ankle is further than the knee from the abdomen, it is distal to the knee.
Explanation:
The five regions of the body are the head, neck, torso, upper extremities, and lower extremities. The body is also divided by three imaginary planes known as the sagittal plane, coronal plane, and transverse plane. The sagittal plane runs vertically and divides the body into right and left portions.The human body is divided into regions. The main ones in the human body are the head, neck, thorax, abdomen, pelvis, together with the upper and lower extremities. The upper limb is divided into shoulder, arm, elbow, forearm, wrist, and hand.The shoulder is ___ to the cervical region
The ankle is ___ to the knee
The abdominal region is ___ to the sternal regionThat's because the glass walls of the greenhouse trap the Sun's heat. The greenhouse effect works much the same way on Earth. Gases in the atmosphere, such as carbon dioxide, trap heat similar to the glass roof of a greenhouse. These heat-trapping gases are called greenhouse gases.The shoulder is ___ to the cervical region
The ankle is ___ to the knee
The abdominal region is ___ to the sternal regionThe human body is divided into regions. The main ones in the human body are the head, neck, thorax, abdomen, pelvis, together with the upper and lower extremities. The upper limb is divided into shoulder, arm, elbow, forearm, wrist, and hand.Since the ankle is further than the knee from the abdomen, it is distal to the knee.The five regions of the body are the head, neck, torso, upper extremities, and lower extremities. The body is also divided by three imaginary planes known as the sagittal plane, coronal plane, and transverse plane. The sagittal plane runs vertically and divides the body into right and left portions.Since the ankle is further than the knee from the abdomen, it is distal to the knee.The shoulder is ___ to the cervical region
The ankle is ___ to the knee
The abdominal region is ___ to the sternal regionThe human body is divided into regions. The main ones in the human body are the head, neck, thorax, abdomen, pelvis, together with the upper and lower extremities. The upper limb is divided into shoulder, arm, elbow, forearm, wrist, and hand.The five regions of the body are the head, neck, torso, upper extremities, and lower extremities. The body is also divided by three imaginary planes known as the sagittal plane, coronal plane, and transverse plane. The sagittal plane runs vertically and divides the body into right and left portions.The human body is divided into regions. The main ones in the human body are the head, neck, thorax, abdomen, pelvis, together with the upper and lower extremities. The upper limb is divided into shoulder, arm, elbow, forearm, wrist, and hand.
Which of the following are freshwater ecosystems?
Answers: ponds, lake, river
produces most of the food in the ocean.
Answers: Phytoplankton
Freshwater wetlands include and
Answers: marshes and swamps
is a measure of the amount of salt dissolved in water
Answers: salinity
Which biome is pictured above?
Answer: coral reef
is an excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen.
Answers: Eutrophication
Sunlight cannot penetrate deeper layers of the ocean so cannot happen.
Answers: photosynthesis
Most marine organisms live in
Answer choices:
A. shallow coastal waters
B. fisheries
C. deep ocean water
Data analysis
Aquatic Organism pH Range for Life
Clam 4.5 - 5.0
Snail 5.0 - 9.0
Bass 5.5 - 9.0
Crayfish 5.5 - 8.5
Mayfly 5.5 - 9.0
Salamander 6.0 - 8.0
Trout 6.0 - 8.5
Perch 6.5 - 8.5
Frog 7.0 - 9.5
To test acidity levels of water, scientists test the pH. As acid rain falls, the pH levels in lakes and streams decrease. While certain animals can tolerate low pH levels, others are extremely sensitive to the effects of acid rain and cannot live under the conditions. Once the pH of the pond drops below 5.5, we can expect which aquatic life form(s) to die out?
Answer choices:
A. trout and salamanders
B. clams and snails
C. perch
Answers
Answer:
Explanation:
The habitats that freshwater ecosystems provide consist of lakes, rivers, ponds, wetlands, streams, and springs. Use these classroom resources to help students explore and learn about these places.
Hope this helps :)
Which material has the highest thermal conductivity? Which material has the highest electrical conductivity? Explain why thermal and electrical conductivity is so high with this material
(copper has the most thermal conductivity with 400. and copper once again has the most electrical conductivity with 5.9x107S/m)
Answers
Conductivity is the measure of the ease at which an electric charge or heat can pass through a material. A conductor is a material which gives very little resistance to the flow of an electric current or thermal energy.
What is thermal conductivity examples?The physical property how much a body can be sized for thermal conductivity. Good thermal conductors have a high value of thermal conductivity, while insulators have low thermal conductivity. Another factor that depends on thermal conductivity is the thermal sensation.
Thermal conduction, also called thermal diffusion, is a type of heat propagation that takes place in a material medium due to the agitation of molecules. As the temperature of a solid body increases (either through heating or contact with another), the kinetic energy also increases.
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three challenges of the ecosystem management approach
Answers
There are several challenges of the ecosystem and they are mentioned below:
interdisciplinary collaboration is difficult due to differences in professional culture and values.roles and responsibilities of different participants are often not sufficiently clear. implementing EBM is very costly.What is ecosytem?Ecosytem is defined as a community that is biological by nature and the organism in that community attract with each other as well as their physical environment. Ecosystem is consist of both biotic as well as abiotic factor. The living components of ecosystem comes in category of biotic factor and non living components of ecosystem comes in category of abiotic factor.
Biodiversity is all the different kinds of life living in a particular area like the variety of animals, plants, fungi and microorganisms like bacteria and virus that plays a major role in framing of natural world usually three levels of biodiversity are observed and these are genetic species, and ecosystem diversity. Biodiversity is very important for the process that's support all life present on earth including human.
Therefore, interdisciplinary collaboration is difficult due to differences in professional culture and values.
roles and responsibilities of different participants are often not sufficiently clear. implementing EBM is very costly.Learn more about ecosystem here:
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