The correct answer is letter D. Marine Ecosystem. Thirty-two percent of the world's producers is in the marine ecosystem. It is where most of the aquatic resources are located - mangroves, lagoons, reefs, sea floor, etc. The salt content here is higher compared to freshwater.
<span>Every single bank in the United States is a member of the Federal Reserve System</span>
I guess "Earths Tilt and Rotation" because the north pole might be in winter and the south pole would be in summer based on the earths rotation.
