C. Permafrost
Permafrost is the layer beneath the "active layer". The active layer consists of soil that freezes and thaws every year. However, the requirement for permafrost is that it be frozen for two or more years consecutively. This is why permafrost exists in cold environments such as tundras.
The human gene for insulin production is identified and removed using enzymes called restriction enzymes. The same restriction enzymes are used to cut open a plasmid (a small, circular section of DNA).
The micro organisms are found in
<em><u>hot springs
</u></em><em><u>soil
</u></em><em><u>snowfield
beneath earth
rocks
inside roots
swamps
water...
</u></em>
Answer:
Four hydrogen nuclei join to form a helium nucleus, two neutrinos, and energy.
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Explanation:
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