AP BIOLOGY

Detailed explanation-1: -Deposits of these fuels formed millions of years ago, when plants and animals-all part of the biosphere-died and decayed. At that point, their remains were compressed within Earth to form coal, oil, and natural gas, thus becoming part of the geosphere.

Detailed explanation-2: -For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere). River action erodes banks (lithosphere) and uproots plants (biosphere) on the riverbanks.

Detailed explanation-3: -Carbon moves through all four spheres through the carbon cycle. In the short-term carbon cycle, plants convert carbon dioxide, CO2, from the atmosphere into carbohydrates.

Detailed explanation-4: -This sphere includes all of the microorganisms, plants, and animals of Earth. Within the biosphere, living things form ecological communities based on the physical surroundings of an area. These communities are referred to as biomes.