Lactic acid is a byproduct of short-term cellular respiration do to exercise, but if you mean lactose, then it's just the enzymes, that your stomach produces
Animals defend their territories because it’s kinda a instinct and they want to be in charge
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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3. cell wall
The cell wall is a rigid supporting structure.
Answer: its to overturn such resiliency
Explanation: