What reactions are responsible for the glow and heat from the sun? nuclear fission nuclear fusion chemical reactions atomic disintegration?

2. how is heavy water different from normal water

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate

How is electrolysis most commonly used to produce an energy source? a - splitting water molecules produces oxygen, which organisms breathe to fuel their bodies. b - splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells. c - splitting carbon dioxide molecules produces coal, a form of carbon that can be burned to produce heat. d - splitting carbon dioxide molecules produces natural gas, which can be burned to generate electricity in power plants.