An atom that carries a charge is called a(n)

a. ion.
b. molecule.
c. compound.
d. element.
e. microelement


A

Biology & Microbiology

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Cores of coral reefs show a reef base that is well below the photic zone. How are two ways that is this possible, given the light limitations of reef-forming corals?

What will be an ideal response?

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How many unpaired electrons does carbon have in its valence shell?

A. 1 B. 2 C. 3 D. 4 E. 8

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