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mylen [45]
3 years ago
14

Which of the following choices contains two ways in which carbon enters the atmosphere?

Biology
1 answer:
Len [333]3 years ago
6 0

Answer:

d. or c. is what I think I limited your options

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What is Natural selection
icang [17]

Answer:

This term was created by Charles Darwin based off his research on evolution

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

7 0
3 years ago
Hormone is controlled by a
Marina CMI [18]

Answer:

Hormones are controlled by a

(negative)

feedback system between the glands that produce this hormone and the  concentration of blood calcium ions. If the level of ions is

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which releases both calcium and phosphate ions into the blood stream.​

Explanation:

Negative Feedback a the process in your body that helps to maintain Homeostasis. If some variable changes a value in your body, like your ion levels,  your glands produce a hormone that causes resorption by  cells. This releases both calcium and phosphate ions into the blood stream and therefore your ion levels go back to normal.

Hope this helps!

5 0
2 years ago
Richard works 46 hours a week for 6 weeks. How many hours has he worked in all?
mezya [45]

Answer: A

Explanation:

46*6=276

7 0
3 years ago
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Birds have tetrachromacy, which is the presence of four types of cone cells. According to this information, which statement is t
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Birds have great vision and can see throughout night and day
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What are the locomotory organs of fish?​
spin [16.1K]

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