<span>Proteins are made up of chains of small organic molecules called amino acids such as glycine, alanine, lysine or tryptophan.
Amino acids contain an amine functional group, which contains a
nitrogen atom, possibly one or two atoms of hydrogen, and a carboxylic
acid group, which has the formula -COOH.</span>
They are able to absorb water and contain it
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The correct answer is: C) are usually more rich in species<span> biodiversity than </span>
<span>Climax
communities are usually more rich
in </span>species biodiversity than communities that are undergoing primary succession. They contain a mature ecosystem as they have had time to gather species that couldn't live through the early stages of an ecosystem.
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I think it’s B
Sorry if it’s wrong
The correct answer is C: at lest a few kilomerters below Earth's surface, in the lithosphere and uper mantle