Freshwater makes up about 2.5% of the total water on Earth, while saltwater makes up about 97.5%.
Oxygen makes up 21 percent of Earth's atmosphere.
Water makes up approximately 70% of Earth's surface.
Nitrogen
80%
Nitrogen makes up almost 80 percent of air. Oxygen makes up about 21 percent, with the remaining 1 percent made up of various gases such as carbon dioxide, argon, and others.
Nitrogen is the gaseous nonmetal that makes up 78 percent of Earth's atmosphere.
Freshwater makes up about 2.5% of the total water on Earth, while saltwater makes up about 97.5%.
Oxygen makes up 21 percent of Earth's atmosphere.
75%
Nitrogen
Water makes up approximately 70% of Earth's surface.
Nitrogen
80%
Water makes up about seventy five percent of the Earth's surface.
32%
Oceans