Why are certain traits adaptions in one environment, but not in another?

As global warming continues the ocean absorbs more of the earth's heat what term describes the ocean as a storage location for heat a) heat binb) heat sinkc) heat storaged) heat vent( answer this for me)

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms