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What percentage of Earth's atmosphere is made of Oxygen?
Mesosphere
The force that air exerts on all objects
Thermosphere
Troposphere and Stratosphere
Troposphere
21%
1%
A mixture of gases that surround a planet, held by gravity.
What is the definition of air pressure?
Mesosphere
The force that air exerts on all objects
Thermosphere
Troposphere and Stratosphere
Troposphere
21%
1%
A mixture of gases that surround a planet, held by gravity.
What is the definition of atmosphere?
Mesosphere
The force that air exerts on all objects
Thermosphere
Troposphere and Stratosphere
Troposphere
21%
1%
A mixture of gases that surround a planet, held by gravity.
What percentage of the Earth's atmosphere is made of other gases?
Mesosphere
The force that air exerts on all objects
Thermosphere
Troposphere and Stratosphere
Troposphere
21%
1%
A mixture of gases that surround a planet, held by gravity.
Which layer contains 75-80% of all molecules (densest layer)?
Mesosphere
The force that air exerts on all objects
Thermosphere
Troposphere and Stratosphere
Troposphere
21%
1%
A mixture of gases that surround a planet, held by gravity.
Which layer protects us from meteors?
Mesosphere
The force that air exerts on all objects
Thermosphere
Troposphere and Stratosphere
Troposphere
21%
1%
A mixture of gases that surround a planet, held by gravity.
Which layer contains the ionosphere that cause the auroras?
Mesosphere
The force that air exerts on all objects
Thermosphere
Troposphere and Stratosphere
Troposphere
21%
1%
A mixture of gases that surround a planet, held by gravity.
Which two layers do airplanes fly in?
Mesosphere
The force that air exerts on all objects
Thermosphere
Troposphere and Stratosphere
Troposphere
21%
1%
A mixture of gases that surround a planet, held by gravity.
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