Question

gradual warming up of the earth's surface​

Answer 1

Global Warming is the gradual increase in the overall temperature of the Earth's atmosphere. It begins with a phenomenon called the greenhouse effect. The greenhouse effect is made up of three primary atmospheric gases called “greenhouse gases”. They include carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4).

Answer 2

Answer:

Global Warming is the gradual increase in the overall temperature of the Earth's atmosphere. It begins with a phenomenon called the greenhouse effect. ... Due to the increase of greenhouse gases and rising temperature, Earth's remaining ice sheets are beginning to melt, causing sea levels to rise at an alarming rate.

Explanation:

Greenhouse gases and global warming

Carbon dioxide (CO2) and other greenhouse gases act like a blanket, absorbing IR radiation and preventing it from escaping into outer space. The net effect is the gradual heating of Earth's atmosphere and surface, a process known as global warming