It would be C. is, it makes more sense saying "it is" and not "it are" or "it am"
Answer:
Recycling
Explanation:
Recyling is important so that we don't add to landfills and hurt the environment. Natural resources are saved and it reduces how much energy is used.
1.) Conduction 2.) Air mass 3.) Condensation 4.) Evaporation 5.) Convection 6.) oxygen 7.) Nitrogen 8.) carbon dioxide 9.) water vapor 10.) radiation
