Is plants inexhaustible or renewable or nonrenewable

plants are renewable resources. The fact that you can grow, harvest, replant, regrow and then reharvest makes plants renewable

iron and sleel

make siroeel

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.