The most reasonable explanation for why energy conversions are necessary is because select one: a. different types of work require different types of energy sources b. atp is the only type of energy used to do work in any system c. coal is too large to power cell work d. sunlight is not a dependable source of energy

Jayden is taking a test. he has to write why scientists support the theory that life began near hydrothermal vents in the ocean. which point should he include in his answer? a. hydrothermal vents were closest to ocean surface, and therefore could receive oxygen. b. oceans were dry and only had water near the hydrothermal vents in the earlier ages. c. even today, all life forms are first born near hydrothermal vents and they later migrate to land. d. fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.