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
Black Lives Matter
Some people are treated unfairly because they are African American, … read more
In the Know
In the Fall
This young scientist is looking at a leaf. He is … read more
In the Know
Marian Anderson: The Woman Who Sang for a Nation
February is Black History Month. Let’s Learn about Marian Anderson. … read more