Athmosphere

Question 1

The _ makes up all the gases on Earth.
It is composed of 78.1% nitrogen, 20.9% oxygen, 0.9% argon, 350 ppm carbon dioxide, and other components.

Answer 1

Atmosphere

Question 2

Layers of atmosphere

Answer 2

Troposphere
Stratosphere
Mesosphere
Thermosphere
Exosphere

Question 3

Give 2 characteristics of atmosphere

Answer 3

1. Atmospheric gases, such as carbon dioxide and oxygen, are needed by organisms.
2. The ozone layer protects Earth form the harmful rays from the sun that would reach the surface of Earth.