Which of the following is true of an object with no net charge?
O
A. The object has equal numbers of neutrons and protons.
O
B. The object has equal numbers of protons and electrons.
O
C. The object has more protons than electrons.
O
D. The object has more electrons than protons.

B

Explanation:

when you subtract the two they equal zero

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.