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lianna [129]
3 years ago
6

Directional selection only occurs in response to naturally occurring events. Please select the best answer from the choices prov

ided T F
Biology
1 answer:
masya89 [10]3 years ago
4 0
This is false

This selection and variation happens more gradually. It is hard to notice over a short period of time. The change is slow, constant and consistent. In punctuated equilibrium, the changes come in spurts. There are periods wherein a huge change occurs and there are also periods with very little change. The mutation is at random. Genetic drift is the change in the frequency of a gene variant due to a random sampling of organisms.
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The major action of angiotensin II is: Group of answer choices Increased parathormone secretion by the parathyroid Decreased adr
LenKa [72]

The major action of angiotensin II is C) increased vasoconstriction.

Angiotensin II is a vasoconstrictor and stimulates the adrenal cortex to supply aldosterone. Vasopressin is launched whilst osmoreceptors inside the hypothalamus are stimulated by means of hyperosmolarity.

The Parathyroid's fundamental function is to adjust calcium, phosphorus, and magnesium tiers via multi-organ impact

Even as angiotensin II is a part of the renin-angiotensin system, aldosterone manufacturing, and secretion by using the adrenal gland is simply stimulated by using angiotensin II so tiers boom and purpose renal reabsorption of sodium and multiplied blood volume.

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3 0
2 years ago
Need urgently. Due tomorrow
Tpy6a [65]

Answer:

The London’s numbers are more than twice the amount compared to the the East and west .

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Explanation:

4 0
4 years ago
Explain how tapeworms can survive without a coelom, a mouth, a digestive system, or an excretory system.
sergij07 [2.7K]
They absorb food from their environment and release ammonia into their environment through their body surface because their body is very flat, due to the lack of coelom

Hope this helped
4 0
4 years ago
__________ involves the medical management of alcohol withdrawal symptoms
Leni [432]
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3 0
4 years ago
Who used a microscope to see blood capillaries in the tail of a fish?
Genrish500 [490]
Marcello Malpighi was the person who used a microscope to see blood capillaries in the tail of a fish.
He was a famous Italian scientist of the 17th century, and is known as 'the father of microscopical anatomy, histology, physiology, and embryology,' so he is definitely the correct answer. Many terms in biology are actually named after this biologist.
3 0
3 years ago
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