A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
Answer:
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Explanation:
The answer is D. Cenozoic
all of them? I would go with bacteria, fungi, worms, and snails recycle the garbage of dead matter and give back nutrients into the ecosystem.
The answer should be D because if thats one of your answers on your tests and you missed it, then i would recemend studing. D is the answer because if organisms die, then new ones grow.