Answer:
I think it's D
Explanation:
snow takes longer to disappear good luck <3
Modern oceanography began with the Challenger Expedition between 1872 and 1876. It was the first expedition organized specifically to gather data on a wide range of ocean features, including ocean temperatures seawater chemistry, currents, marine life, and the geology of the seafloor.
*You have post lots of questions, i don't have time to solve them all*
Activated/turned on/used to make glycogen
Do not break down quickly or easily, and therefore become concentrated in organisms high in the food chain. Ex, Humans