11.Which shows the order of decreasing atomic size? a. Si, Al, Mg, Na
b. I, Br, Cl, F
c. Be, Mg, Ca, Sr
d. C, P, Se, I

elements make up everything, and they combine to make compounds.

the answer is c

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.

answer7,570,82356 cubic centimeters;