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Lana71 [14]
2 years ago
11

I need help on this, I cant figure it out.

Biology
1 answer:
Fittoniya [83]2 years ago
5 0
From first to last,
1) Pioneer species like grasses and flowers grow
2) Bushes begin to dominate
3) Trees become common and outcompete other plants for sunlight
4) an intact ecosystem is disrupted by a natural disaster
5) The climax community for the area is established once again
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DNA and RNA share a number of similarities, but they also differ in certain aspects of their structure.
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Uracil is not found in DNA, only RNA, and replaces thymine in RNA 
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3 years ago
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g A disease that destroys the adrenal cortex should lead to an increase in the plasma levels of: Group of answer choices Adrenoc
docker41 [41]

Answer:

The correct answer is Adrenocorticotropic hormone

Explanation:

Adrenocorticotropic hormone is a hormone from the anterior pituitary whose function is to stimulate the adrenal cortex (fasciculate and reticular areas); In other words, its biological function is to stimulate the secretion of cortisol. The ACTH test is used as an indicator of pituitary function and is useful in the differential diagnosis of: Addison's disease,Congenital adrenal hyperplasia,Cushing's syndrome.ACTH secretion is pulsatile and shows a diurnal variation in plasma concentrations, being maximum at approximately 8:00 am and minimum at midnight. ACTH secretion increases with stress.

7 0
3 years ago
A botanist created a linear model to predict plant height from soil acidity (pH level) for a certain type of plant. The slope of
Nutka1998 [239]

Answer:

  0.625

Explanation:

The slope (m) of a linear regression line is ...

  m=r_{xy}\cdot\dfrac{s_y}{s_x}

Then we have ...

  2.5=r_{xy}\cdot\dfrac{4}{1}\\\\\dfrac{2.5}{4}=r_{xy}=0.625

The value of the correlation coefficient is 0.625.

5 0
3 years ago
Which component decreases the activation energy of a chemical reaction?
BabaBlast [244]

Answer:

Presence of an enzyme

Explanation:

Enzymes are the biomolecules present in cells. The enzymes serve to catalyze the chemical reactions that occur inside the cells. Enzymes speed up the rate of the chemical reaction and allow the formation of products at a fast rate. This is done by lowering down the activation energy that is required to begin a chemical reaction. This energy breaks down the older bonds present in substrates so that new bonds can be formed. Enzymes lower down the activation energy to speed up the reactions.

4 0
3 years ago
Which statement best describes a scientific question?
marishachu [46]

Answer:

~Hello,~there!

Which statement best describes a scientific question?

  • It must be based on a hypothesis.
  • It must be testable

These are the correct Answers!

Explanation:

  • A good scientific question has certain characteristics. It should have some answers  should be testable  it can be tested by another individual through an experiment or measurement.

Therefore, I hope this helps!

8 0
3 years ago
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