At high altitudes, there is less oxygen. Oxygen is a gas in the air. Our bodies need oxygen to survive. When we do not have enough oxygen, we get sick.
Photo Credit: Adam Sternin/Cavan Images/Image Source
In the Know
How We Help after Hurricanes
Local governments have helped. State governments have helped. The national … read more
In the Know
Bats Use Sound to “See”
Bats and other animals, such as whales, use echolocation to … read more
In the Know
A Bumpy Ride
You are in rough patch of air. This is called … read more