Carbon dioxide is a trace gas in earths atmosphere. Although only a small percentage of the atmosphere consists of carbon dioxide, this gas plays an important role in earths atmosphere. Which of the following describes the role of carbon dioxide?

A- carbon dioxide influences the mass of the atmosphere
B- carbon dioxide influences the height of the atmosphere
C- carbon dioxide influences the heating of the atmosphere
D- carbon dioxide influences the density of the atmosphere

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.