1.
The air surrounding earth.
2.
The bottom layer of the atmosphere where we live.
3.
It starts to get hotter and it is the second layer.
4.
The process of water on the ground entering the soil.
5.
Water vapor leaving the leaves an going to the plants.
6.
The third layer of the atmosphere and the coldest layer.
7.
The fourth layer heated by high-energy x-rays and UV radiation from the sun.
