Answer:
I'm pretty sure its...
Explanation:
We know relatively little about deep sea ecosystems, making it harder to assess the impact of mining.
"Obtain and use energy" is your answer :)
DNA formed as a double helix with<span> </span>molecules<span> called nucleotides. A nucleotide is made of a phosphate group, a sugar group, and a nitrogen base. There are four types of nitrogen bases: adenine, thymine, guanine and cytosine. They pair up to create the DNA molecule.</span>

B.) speeds up chemical reactions
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Answer:
Explanatsad mad and happyion: