The carbon dating technique would only be best for a Neanderthal bone from 40,000 years ago.
What is carbon dating?
Organisms are known to exchange [tex]^{14} C[/tex] with their environment while they are alive. There are two types of carbon isotopes which are carbon 12 and carbon -14.
The carbon -14 is known to be radioactive. As such, the decay of the carbon - 14 isotope could be used to obtain the age of the sample of the radioactive sample.
Again, it is known that the limit of the accuracy of the carbon-14 system of dating technique lies around 50 000–60 000 years. It then follows that the carbon dating technique would only be best for a Neanderthal bone from 40,000 years ago.
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Which question most closely relates to the ecologists' observations and collected reports on prairie dogs?
Why are there so many prairie dogs in grasslands?
Are prairie dogs being hunted by people?
What foods do prairie dogs need to survive?
Are prairie dogs dying from sylvatic plague?
The question that most closely relates to the ecologists' observations and collected reports on prairie dogs is as follows: Are prairie dogs dying from sylvatic plague? (option D).
Who is an ecologist?An ecologist is a scientist that studies the relationships of organisms with their environment and with each other.
According to this question, ecologists are tracking colonies of black-tailed prairie dogs that are native rodents to Northern America. However, they notice a drastic decline in the population of the prairie dogs.
Based on the documented reports on a bacteria that induces sylvatic plague, the question that most closely relates to the ecologists' observations and collected reports on prairie dogs is as follows: Are prairie dogs dying from sylvatic plague?.
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Which of these is part of the biosphere?
a. bees
b. sand
c. rivers
d. clouds
Answer:
c
Explanation:
Consider the scenario.
A scientist sets up an experiment to see how sugar in the diet of
rats affects their weight. The scientist feeds one group of rats a
diet high in sugar, another group a diet of moderate sugar levels,
and a third group a diet low in sugar.
All of the rats in the experiment are the same species and age
and start the experiment at a healthy weight. The rats also
receive the same kind of sugar.
What is the independent variable?
A. amount of sugar
B. weight of the rats
C. age of the rats
D. type of sugar
The dependent variable is affected by the independent one. The amount of sugar (heigh, moderate, low) is the independent variable. Rats weight is the dependent variable.
What are the dependent and independent variables?Independent variables are those modified or changed by the researcher to study how this change affects another variable and hence the results.
This variable is not affected by any other one but influences or causes a reaction in other variables.
The dependent variable is the one influenced by the independent variable, and is affected by any change on this last one.
Its response might be either directly proportional or inversely proportional to the change in the independent variable.
In the exposed example,
Aim of the experiment: to see how sugar in the diet of rats affects their weight.Independent variable: Amount of sugar (high, moderate, low)Dependent variable: Rats weightControl variables: Type of sugar, initial weightThe amount of sugar (independent variable) that was provided to rats will affect or influence their weight (dependent variable).
So, rats weight will change according to the sugar they get in the diet.
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What causes the moon to have different phases?
Discuss a factor that may lead to substance or alcohol use and abouse
Peer pressure is a factor that may lead to substance or alcohol use and abuse.
Peer pressure has a significant role in young individuals beginning to use and abuse drugs. Family involvement is lacking. Addiction risk can be boosted by challenging family dynamics, a lack of connection to your parents or siblings, and a lack of parental supervision. first use.
Addiction and negative peer pressure are frequently connected. Someone who experiences this kind of peer pressure is more likely to engage in unhealthy activities, such as drug or alcohol usage. Peer pressure and relapse in addiction may also be related because it may cause an addict to relapse after making the decision to pursue recovery.
When it comes to drug use, peers can have either a positive or negative impact on their friends. Depending on the situation, peer pressure may be used to discourage people from using particular sorts of drugs, convince them not to use any drugs at all, or motivate them to abuse all forms of drugs.
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Aspartame is a food additive that can cause dangerous health problems for some people. a. true b. false
8. Indicate how you would make 300 ml of 1X PBS (phosphate buffered saline) from a 20X PBS stock
solution.
Concentrate must be diluted 20 times with distilled water to create a 1X PBS solution. A mixing flask should be filled with the proper volume of 20X PBS concentrate before adding water to reach the desired volume. Stir only once. The pH of the 1X solution must be 7.6 & 0.2.
A common isotonic solution used in biological research is phosphate-buffered saline (PBS). Add 100 mL of 10X PBS to 900 mL of water to create 1 L of PBS. [tex]137 mM NaCl[/tex], [tex]2.7 mM KCl[/tex], [tex]10 mM - Na_{2} HPO_{4}[/tex], and [tex]1.8 mM KH_{2} PO_{4}[/tex]are all present in this PBS mix.
Concentrations for 1X PBS Solutions:
[tex]NaCl - 137 mM[/tex]
[tex]Na_{2} HPO_{4} - 10 mM[/tex]
[tex]KH_{2} PO_{4} - 1.8 mM[/tex]
[tex]KCl - 2.7 mM[/tex]
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(a) Pepsin is a protein-digesting enzyme found in the stomach. It
has an optimum pH of 2 and is fully denatured at pH 6. Sketch a
curve on the graph to show the effect of pH on the rate of
reaction of pepsin.
Please find attached a sketch of the rate of reaction enhanced by pepsin at various pH, which shows a peak in the reaction rate at a pH of 2, and a reduction to (almost) zero rate of reaction at a pH of 6.
How can the variation of the rate of reaction with pH be graphically presented?(a) The given parameters for the enzyme, pepsin are;
Type of enzyme = Protein–digesting enzymeLocation of enzyme = The stomachEnzyme optimum pH = 2pH at which the enzyme is denatured = 6Required;
A sketch of a curve that shows the effect of varying pH values on the reaction rate of pepsin.
Solution;
An enzyme is denatured when it is not able to function to affect the rate of a reaction due to the loss of its tertiary or three dimensional structure.
The rate of the reaction when pepsin is denatured at a pH of 6 can therefore be taken as zero.
The graph of the variation of the rate of reaction for pepsin with pH consists of a curve that has a peak reaction rate at a pH of 2, and slopes downwards towards a reaction rate of zero at a pH of 6.
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what type of cell transport uses carrier proteins
Explain how injury can cause disease in pets.
Injuries can cause disease in pets because when the pets get hurt, some body parts are showing up which allows germs to enter the body. As a result, the pet gets sick.
Glad to help. :)
Answer:
Let's say a dog is in a race. This dog falls and gets scraped. If the injury consists of an open wound, that would leave a big opening for diseases to get in. Diseases can be harmful to the way pets function, just like us humans. If your pet is injured, do anything you can to treat it.
What is the MOST frequent cause of slash and burn deforestation?
A. office buildings
B. canals like the Panama Canal
C. National Parks
D. agriculture
the arrows in the diagram stands for forces in earth,s crust pulling apart the two slabs of rock. this force is called
a.) tension
b.) elavation
c.) compression
d.) shearing
Answer:
I'm pretty sure it is c or a
Forces in earths crust pulling apart the two slabs of rock, this force is called Tension. Therefore, option (A) is correct.
Earth's crust tension pulls rock apart. At divergent plate borders, tectonic plates move apart. Faults form when tensional forces strain and thin rocks when plates separate. These faults can create rift valleys, mid-ocean ridges, and other geologic features.
Seafloor spreading and continental rifting are driven by tension. As plates separate, magma from the mantle rises to build new crust. New crust is formed at mid-ocean ridges. Tensional forces can also cause continental rifting and ocean development. Tension forms Earth's crust and moves tectonic plates. Therefore, option (A) is correct
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when do mammals and dinosaurs appear in the rock sequence? Label this point appearance of mammals and dinosaurs
In the Triassic period, mammals and dinosaurs appear in the rock sequence.
During which period did mammals first appear?The first mammal appear in the fossil record during the late Triassic period, which is about 225 million years ago. The Triassic period is also known as the first period of the Mesozoic era. This period started from 251.9 to 201.3 million years ago. This era is popularly known as the “Age of Reptiles” because reptiles and dinosaurs were the dominant land animals at that time and they are present in large population due to good environmental conditions and large availability of food resources. We know that dinosaur extinct due to unavailability of food and bad environment.
So we can conclude that In the Triassic period, mammals and dinosaurs appear in the rock sequence.
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Which of the following reasons explains why electrical cords are plastic coatings with metal wires on the inside?
Explanation:
metal has high electrical conductivity,but so you don't get electrocuted the metal has plastic coating because Plastic has low electrical conductivity
What is the main reason that people are hesitant to use nuclear energy?
a.
It produces radioactive waste.
D.
It uses large amounts of water.
C.
The ore used for
nuclear energy must be mined.
d.
It is more damaging to natural habitats than the use of coal.
Answer: D
Explanation: It is D because it does damage natural habitats, and also uses loads of coal that needs to be produced, that could possibly be Exteremly hazardous or has high end levels of radiation
State two criteria of a scientific hypothesis.
Explanation:
cientific hypothesis
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scientific hypothesis
By Kara Rogers • Edit History
scientific hypothesis, an idea that proposes a tentative explanation about a phenomenon or a narrow set of phenomena observed in the natural world. The two primary features of a scientific hypothesis are falsifiability and testability, which are reflected in an “If…then” statement summarizing the idea and in the ability to be supported or refuted through observation and experimentation. The notion of the scientific hypothesis as both falsifiable and testable was advanced in the mid-20th century by Austrian-born British philosopher Karl Popper.
pls marke brainliest
Germany and Italian have your Sanskrit for has a
try to classify the following stem growth forms.
You need to find out why the GBR water is inhibiting (stopping) photosynthesis in the algae. The three major parts of photosynthesis are PSI, PSII and the Calvin cycle. The database has provided 3 things that could be inhibiting photosynthesis: high sea temperatures, paraquat, and diuron.
Explanation:
If the temperature increases then that will decrease the sugar but not the ATP and NADPH. So I predict that diuron will inhibit the photosynthesis because if photosystem II is infered with it then photosynthesis wouldn't work.And also, because paraquat will lower the NADPH and sugar but not ATP. Hence Diuron is the only choice left.
An autopsy report shows evidence of a gunshot wound and mentions
exsanguination (extreme blood loss) and homicide. The mechanism of
death in this case would be
gunshot wound
homicide
exsanguination
No answer text provided.
The mechanism of death is the physiological derangement that results in death. An example of a mechanism of death due to the gunshot wound described above is exsanguination extreme blood loss.
Homicide is defined as the act of one person that directly causes the death of another. Homicide also includes death occurring during or in connection with the commission of a crime. A death mechanism describes a particular change in the body that brought about the end of life. For example, if the cause of death is a shootout.
The mechanism of death could be exsanguination, exsanguination, or cessation of brain function. A death certificate must be ordered within 72 hours, but the coroner's investigation into the cause of death can take weeks or months. That is, the cause of death is listed as pending on the certificate. This is the default if the cause of death is still unknown.
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Which of the following properties is unique to echinoderms within higher invertebrates?
A.
radial symmetry
B.
bilateral symmetry
C.
segmentation
D.
exoskeleton made of chitin
what is the name for the rafflesia's organism
if there is 10 fish
2fish swim away
2fish died
2 fish drowned.
how many fish are now?
Which of the following statements best explains the difference between a theme and a topic?
A theme is one word; a topic is a complete sentence.
A theme is what the text is about; a topic is the lesson delivered to the reader.
A topic is what the text is about; a theme is the lesson delivered to the reader.
A theme is revealed in the exposition; the topic is revealed in the resolution.
The statement that best explains the difference between a theme and a topic is as follows: a theme is what the text is about; a topic is the lesson delivered to the reader (option B).
What is a theme and topic?A theme is what is generally being talked about, as opposed to the rheme.
Although a theme and topic are similar and often confused, the major difference between them is that;
a topic pertains to the story's “what.” and is driven by facts and specifics.a theme deals with the big picture and overall meaning that reveal why the story matters.Therefore, it can be said that the statement that best explains the difference between a theme and a topic is as follows: a theme is what the text is about; a topic is the lesson delivered to the reader.
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Answer: The answer is C) A topic is what the text is about; a theme is the lesson delivered to the reader.
Explanation:
what close it take to be a philosopher?
Answer:
Get a bachelor's degree in philosophy.
Going to an accredited university to earn your BA in philosophy is the first step in becoming a Philosopher. ...
Go to graduate school to earn your master's degree or PhD in philosophy. ...
Select an area of specialization. ...
Write a dissertation.
Explanation:
can you help me please
The equilibrium price according to the graph is $3.00. Option C.
What is an equilibrium price?An equilibrium price of a product is the price that equates the demand for the product with its supply.
In other words, the equilibrium price is the price at which demand equals supply.
On a graph of price against quantity, the demand curve slopes downward from left to right. On the other hand, the supply curve slopes upward from left to right on the same graph.
The price at which the demand curve intersects the supply curve on the graph is known as the equilibrium price.
From the graph, the approximate value of the equilibrium price is $3.00.
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3. What region of the Earth is most affected by tsunamis? (provide ocean name and
nickname of this region)
Answer:
Pacific Ocean and Indonesia
Explanation:
yir-ytnf-wdbEvery month a man consumes 25 kg rice and 9 kg wheat. The price of rice is 20% of the price of wheat and thus
The price of rice and consumption of wheat %decrease in the amount of rice is 36%.
What makes consumption so important?One of the more complex concepts in economics, consumption is crucial since it influences the health and development of the economy. Businesses can start up and offer a variety of fantastic things, but if we don't buy or use them, they won't last very long.
Calculation:Suppose wheat costs x per kilogram. Wheat will then cost 5 times as much per kilogram.
Expenditure on rice = 25*x = 25x.
Expenditure of wheat = 9*5x = 45x.
Total cost,
25x + 45x = 350.
70x = 350.
x = 5.
Hence, price of Rice = Rs. 5 per kg.
Price of wheat = 25 per kg.
price of wheat = 25 ---- 20% ----> Rs. 30 per kg.
Rice be N kg
N*5 + 9*30 = 350.
N = 16 kg.
Rice decrease as a percentage = [(25-16)*100]/25=36%.
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The complete question is -
Every month a man consumes 25 kg rice and 9 kg wheat. The price of rice is 20% of the price of wheat and thus he spends total Rs. 350 on the rice and wheat per month. If the price of wheat is increased by 20% then what is the percentage reduction of rice consumption for the same expenditure of Rs. 350? Given that the price of rice and consumption of wheat is constant :
A-4
B-25
C-36
D-24
Give three important adaptation of peanut that able it to outcompete native plants in terms of nutrients.
Answer:
Explanation:
What are 3 reasons plants could develop a physical adaptation?
All plants, no matter where they grow, are adapted to certain conditions, which can include temperature, available water, soil type, and interactions with animals and other organisms.
Hope this helps :)
Explanation:
Tara's careful about punctuation and spelling when he writes letters to customers and clients which professional work habit is Pierre demonstrating a consistency adaptability see attention to detail the healthfulness timeliness
. How do the parent guinea pigs and their pups provide evidence that support Mendel's conclusion about inheritance?
The guinea pig is a small, domesticated rodent native to South America. Humans domesticated this species somewhere about 5,000 B.C., perhaps from the Montane Guinea Pig.
The domestic version, sometimes known as "Cavies," is a separate species today. They are frequently kept as pets in homes and are typically well-liked because to their docility and love to people. Continue reading to learn more about the Guinea Pig. These rodents are quite little, with tiny ears, short legs, and no tail. Cavies normally weigh one to two pounds and are eight to nine inches long.
Animals with a variety of colors and coats have been painstakingly produced by humans. Therefore, instead of being white, cream, grey, black, orange, or any combination of the aforementioned hues, these little rodents are brown.
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What is used to trap light energy in plants?
Answer:
chlorophyll
Explanation:
this is right
Answer:
Chlorophyll.
Explanation:
Chlorophyll, located in chloroplasts in the leaves of a plant.
Hope this helped! ^^
