Which of these statements is not true about chemical reaction rates? a. the reaction rates can change. b. the reaction rates can increase. c. the reaction rates can decrease. d. the reaction rates are always constant.

your answer would be a. 12.5 kg

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.