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ss7ja [257]
2 years ago
15

Platelets release a vasoconstricting substance called:.

Biology
1 answer:
Alinara [238K]2 years ago
3 0

Answer:

Serotonin

Explanation:

Please mark me brainliest

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Which term BEST describes the establishment of a new<br> community of organisms after a volcano?
frez [133]

Answer:

Pioneer species is the general name for the first organisms to move into a disturbed environment or to grow after a volcanic eruption covers an area with lava.

Hope it helps!

5 0
3 years ago
What is the definition of “gene expression”?
Alecsey [184]

Explanation:

Gene expression is the process by which the instructions in our DNA are converted into a functional product, such as a protein. 

7 0
2 years ago
In small populations gene frequencies can change drastically by chance alone this is called
romanna [79]
When a small populations' gene frequencies are changed drastically by chance alone it is called a genetic drift

7 0
3 years ago
b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did t
saveliy_v [14]

Answer:

The initial amount, 1.3 million = 1,300,000 is the 100%.

now, 640,000 is a given percentage (lower than 100%) of that.

How we can find it?

suppose that 640,000 represents an x%.

Then we have that the quotient between the actual quantities and the percentages must be the same

(640,000/1,300,000) = x%/100%

x% = (640,000/1,300,000)*100% = 49.23%

Then the percentage declined is:

100% - 49.23% = 50.77%

The other question can not be answered with the given information.

4 0
3 years ago
Human activities, such as the burning of fossil fuels, result in air pollution. What could be an outcome if the amount of smoke
spin [16.1K]

Answer:

D) The smoke would settle around cities, reducing visibility.

7 0
3 years ago
Read 2 more answers
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