Question

Definition of global warming

Answer 1

Step-by-step explanation:

Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released by people burning fossil fuels.

A gradual heating of the Earth's surface, oceans and its atmosphere, is caused by human activity.

Answer 2

a gradual increase in the overall temperature of the earth's atmosphere because of the greenhouse effect caused by increased levels of pollutants.

Step-by-step explanation: