<span>I think I'd go with this one: Central nervous system - processes information and controls responses. It looks like correct pair.</span>
Answer:
D
Explanation:
Example the action of teeth on food in the mouth increase surface area for salivary amylase to start digestion of starch
The statement which best explains why carbon is present in so many kinds of molecules is because <u>it can form four covalent bonds.
<em /></u>It isn't rare on Earth, so A is incorrect. It has valence electrons, so C is incorrect. It cannot become an ion, so D is incorrect.<u>
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