When the number of protons and electrons is the same for an atom, the atom is

a. neutral. b. positively charged. c. negatively charged. d. positive or negative, depending on what the element is.

A) Neutral.

Explanation:

Protons are positively charged and electrons are negatively charged, while neutrons have no charge. In a "neutral atom", the number of protons must be equal to the number of electrons, otherwise it would not be neutral.

Hope this helps! :)

coral.

explanation:

coral. many marine organisms that produce calcium carbonate shells or skeletons are negatively impacted by increasing co2 levels and decreasing ph in seawater.