Question

the concentration of carbon dioxide in earths atmosphere might be stated in a. grams per meter b. joules per watt c. parts per million. send a message to the instructor < join another session

Explanation:

Concentration of gases in the atmosphere is often expressed in parts - per - million (ppm). Grams per meter is a unit for linear mass density, and joules per watt is a unit related to energy and power conversion.

Answer:

C. parts per million