.
Oxygen
Carbon dioxide
Nitrogen
Argon
Troposphere
Stratosphere
Mesosphere
Thermosphere
The Earth's atmosphere has changed naturally over time
The Earth's atmosphere does not change
Human activities have caused significant changes in the Earth's atmosphere
Living things must adapt to changes within the Earth's atmosphere
Argon
Oxygen
Nitrogen
CFC's
It produces the ozone layer
It has the highest temperatures
It contains a high concentration of gas particles
It is the region in which weather occurs
Dust, argon, smog
Pollen, oxygen, carbon dioxide
Pollen, sulfuric acid, smog
Dust, oxygen, sulfuric acids
As altitude increases, air density decreases
As altitude increases, air density increases
As altitude increases, air density remains the same
There is no relationship between altitude and air density with the Earth's atmosphere
Troposphere
Stratosphere
Mesophere
Exosphere
Troposphere
Meosphere
Thermosphere
Exosphere
It produces the ozone layer
It has the highest temperatures
It contains a high concentration of gas particles
It is the region in which weather occurs
Mesosphere
Troposphere
Exosphere
Atmosphere
These gases absorb the sun heat & emits radiant energy
These gases keep all the air within the Earth
Increases the Earth's temperature
It makes the Earth cooler