When water goes through a phase change, what happens to the temperature of the water? what is the atmospheric greenhouse effect? name the two most abundant / important greenhouse gases in the atmosphere?

Explanation:

1. Change of the state of water as the temperature is increased or decreased -

2.

Greenhouse effect -

It is the process by which the the radiations of the sun get trapped in the atmosphere of the Earth , and increases the temperature of the surface of the planet , and thereby avoiding the situation of the freeing of the Earth's surface .

The two main and important greenhouse gases are - Carbon dioxide , methane , etc .