Crear
Composition of the Atmosphere
THE MOST IMPORTANT GAS IN THE ATMOSPHERE
Gravity
OXYGEN
ozonosphere
carbon dioxide
ATMOSPHERE
78% nitrogen, 21% oxygen, 1% other
The envelope of gases surrounding the earth or another planet.
a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cells
NITROGEN
A force that pulls objects toward each other
a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun