They are basically the next step up from atoms. They are smaller living organisms. (might not be helpful but it's a start)
Answer:
is a process in which deep, cold water rises toward the surface. ... Water that rises to the surface as a result of upwelling is typically colder and is rich in nutrients. These nutrients “fertilize” surface waters, meaning that these surface waters often have high biological productivity
Explanation:
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three weak hydrogen bonds are between guanine and cytosine bonds</span>
Pollution and deforestation
