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Sauron [17]
3 years ago
8

True or false, the fact that the mountains separate continents appeared to belong to the same chain of mountains was evidence th

at a long time ago, the continents were together.
Biology
2 answers:
atroni [7]3 years ago
8 0
Yes, it is very very true
Inessa05 [86]3 years ago
5 0
Yeah the answer is true
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What is a polygenic trait
kozerog [31]
A polygenic trait is a trait controlled by many (poly) genes. Human skin color is an example; it thought to be the controlled by about 12 genes.
       hope it's best answer
5 0
3 years ago
Why do you need blood? & what organ pushes blood through your body?
QveST [7]
We need blood because it carries oxygen and helps us sustain life. The organ that pushes blood through the body is the heart.
5 0
3 years ago
After the bank robbery, the very frightened people probably experienced increased activation of the sympathetic nervous system,
nata0808 [166]
The answer is Adrenaline

Adrenaline is a stress hormone secreted by the adrenal glands and some other neurons when a person is frightened, excited or generally in stress.

It prepares our body for it's 'fight or flight' mechanism and tightens muscles for exertion.

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7 0
3 years ago
Please help tyyyyy :)
rosijanka [135]

Answer:

Hard

Explanation:

it is hard because these are usually hard parts of an organism including shells, bones, teeth, woody trunk, stems, and branches.

3 0
3 years ago
Paul had chicken pox when he was 5 years old. nicholas received the chicken pox vaccines. which type of immunity does each man h
GrogVix [38]

Answer:

Paul has natural active immunity, while Nicholas has artificial active immunity.

Explanation:

Natural active immunity is an immunity that occurs when an individual is exposed to a disease causing organism, gets infected, and also become immune to the disease due to the primary immune response. From the question, Paul has natural active immunity because he had chicken pox before, and the virus that causes chicken pox has interacted with his immune response, hence, making him to develop natural immunity to the disease.

Artificial active immunity is an immunity that an individual acquires when small amount of immunity to a disease is deliberately exposed to his body. Artificial active immunity is usually produced in the form of vaccinations. From the question, Nicholas has artificial active immunity because chicken pox vaccines were intentionally introduced to his body.

8 0
3 years ago
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