Let's Learn About Earth's Atmosphere!

What is the composition of Earth's atmosphere?

Which of the following gases make up the majority of Earth's atmosphere?

Composition of Earth's Atmosphere

The majority of Earth's atmosphere is composed of:

Nitrogen (N2) - 78%

Oxygen (O2) - 21%

Argon (Ar) - 0.93%

Carbon Dioxide (CO2) - 0.04%

The Earth's atmosphere is made up of several gases, with nitrogen (N2) and oxygen (O2) being the two most abundant gases. Nitrogen makes up about 78% of the atmosphere, while oxygen accounts for around 21%. In addition to nitrogen and oxygen, there are trace amounts of other gases such as argon (Ar) and carbon dioxide (CO2).

Nitrogen is a crucial element for living organisms and is used in the production of proteins and DNA. Oxygen is essential for respiration and combustion processes. Argon, being a noble gas, is chemically inert and plays a minor role in atmospheric processes. Carbon dioxide, although present in small amounts, plays a significant role in the greenhouse effect and climate change.