BIOLOGY HIGH SCHOOL

The Eastern grey squirrel lives mostly in oak trees that have a medium gray bark. In some cities, oak tree bark is darkening due to air pollution. This Eastern grey squirrel shows melanism, or the increase in black pigment in its fur. What is MOST LIKELY the reason for the change in fur color?

Answers

Answer 1
Answer:
It is a way to camouflage the squirrel in a changing habitat.
Answer 2
Answer:

Answer:

The answer is D: It is a way to camouflage the squirrel in a changing habitat.

Explanation:

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What is the polysaccharide found in plant cell walls?

Answers

The polysaccharides that are found in the walls of the plant cells come in three types. These three types includes the cellulose, hemicelluloses, and the pectic polysaccharides. These are very important sugars that are found in the the cell walls plants. 

Hepatocytes do not ________.A. produce digestive enzymes
B. process nutrients
C. store fat-soluble vitamins
D. detoxify

Answers

Hepatocytes do not produce digestive enzymes.

What are Hepatocytes

Hepatocytes are specialized cells found in the liver, and they perform various functions related to metabolism and detoxification. While hepatocytes play a crucial role in processing nutrients, storing fat-soluble vitamins, and detoxifying harmful substances, they do not produce digestive enzymes.

Digestive enzymes are primarily produced by the pancreas and salivary glands, and they are responsible for breaking down food into smaller molecules that can be absorbed and utilized by the body.

Read more on Hepatocytes here brainly.com/question/12976427

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i think it's b 
because i don't think the other ones sound good 

The initial increase in heart and breathing rates during the skin diving trip was probably a result of: a. activation of the sympathetic autonomic nervous system by the new experience. b. activation of the parasympathetic autonomic nervous system by the new experience. c. hypoxia caused by the inability of her blood hemoglobin concentration to supply sufficient oxygen for the strenuous exercise of swimming at sea level. d. elevated core body temperature caused by swimming in warm tropical waters.

Answers

Answer:

a. activation of the sympathetic autonomic nervous system by the new experience.

Explanation:

The sympathetic division of the autonomic nervous system generates a flight or fight response. This is a series of physiological processes that start when a person has any stress, new experience or emergency conditions such as the first diving trip. One such response produced by activated sympathetic division is increased heart rate to pump more blood and deliver more oxygen to body cells and tissues. Also, the person experiences an increased breathing rate to compensate for the increased oxygen demand.

What are the steps for the scientific method?

Answers

Scientific method is a process that is used to explore various experiments and scientific findings.

Steps for the scientific method:

  • Ask a question.
  • Do research background
  • Construct a hypothesis
  • Test with an experiment
  • Procedure working
  • Analyze data and draw conclusions
  • Communicate results.

Scientific method often ask a question such as, what, how, why, whom, where are some of the questions. Scientist also have to do some background research such as background research plan, finding information.

After background research scientist have to frame the hypothesis and to the hypothesis as well. The next step after hypothesis scientist have to made analyze the data and draw the conclusion.

To learn more about scientific method, refer to the link:

brainly.com/question/7508826

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The steps of the scientific method are to: 

* Ask a Question 
* Do Background Research 
* Construct a Hypothesis 
* Test Your Hypothesis by Doing an Experiment 
* Analyze Your Data and Draw a Conclusion 
* Communicate Your Results 




Ask a Question: The scientific method starts when you ask a question about something that you observe: How, What, When, Who, Which, Why, or Where? 

And, in order for the scientific method to answer the question it must be about something that you can measure, preferably with a number. 



Do Background Research: Rather than starting from scratch in putting together a plan for answering your question, you want to be a savvy scientist using library and Internet research to help you find the best way to do things and insure that you don't repeat mistakes from the past. 


Construct a Hypothesis: A hypothesis is an educated guess about how things work: 
"If _____[I do this] _____, then _____[this]_____ will happen." 

You must state your hypothesis in a way that you can easily measure, and of course, your hypothesis should be constructed in a way to help you answer your original question. 

Test Your Hypothesis by Doing an Experiment: Your experiment tests whether your hypothesis is true or false. It is important for your experiment to be a fair test. You conduct a fair test by making sure that you change only one factor at a time while keeping all other conditions the same. 

You should also repeat your experiments several times to make sure that the first results weren't just an accident. 


Analyze Your Data and Draw a Conclusion: Once your experiment is complete, you collect your measurements and analyze them to see if your hypothesis is true or false. 


Scientists often find that their hypothesis was false, and in such cases they will construct a new hypothesis starting the entire process of the scientific method over again. Even if they find that their hypothesis was true, they may want to test it again in a new way. 


Communicate Your Results: To complete your science fair project you will communicate your results to others in a final report and/or a display board. Professional scientists do almost exactly the same thing by publishing their final report in a scientific journal or by presenting their results on a poster at a scientific meeting. 

Which of the following tastes may be detected at very low concentration?sweet
umami
bitter
salty

Answers

The correct answer is bitter.

People have very strong negative reactions when it comes to a bitter taste. Most of the substances like toxins have bitter taste. The ability of the taste buds to taste the bitter substances shows evolutionary history. The taste has evolved because most of the substances that are harmful to the human beings are bitter in taste. The substances such as alkaloids, drugs, medicines, quinine, caffeine and nicotine have bitter taste. These tastes are not very common to the taste buds so they are detected at very low concentrations.
The taste which we can detect already at very small concentrations is salty taste.

The reason why we have a special affinity for tasting bitter things. The reason why we can taste bitter things at extremely low concentrations is because potentially dangerous compounds can be bitter and it made evolutionary sense for organisms to adapt to taste bitter things.  

Which of the following shows how energy is transferred from organism to organism?Food webs
Food chains
Food trails
Food squares

Answers

Food webs and food chains.
 A food web describes the flow of energy and nutrients through an ecosystem, while a food chain is a linear path through a food web
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