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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Answer:
Passive transport
Explanation:
Water is transported through channel proteins called aquaporins.
When bonding occurs a new substance with new properties is formed.
Answer:
i would go with B and E
Explanation:
by the way u could just read it