What happens when an atom gains an electron? O.
A. It becomes a positive ion.
B. It becomes a negative ion.
OC. It has an increase in the number of neutrons.
Ο Ο
D. It has an increase in the number of protons.
SUBMIT

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere