By Tyler and Madeleine
What is the atmosphere?
The atmosphere is the envelope of gases surrounding the earth or another planet. It is the highest sphere of the Earth, out of the lithosphere, hydrosphere, and the biosphere.
Why is it important?
The atmosphere is an important part of what makes Earth livable. It blocks some of the Sun's dangerous rays from reaching Earth. It traps heat, making Earth a comfortable temperature. And the oxygen within our atmosphere is essential for life.