What is the atmosphere mostly made from?

Answer 1

The atmosphere is made up of 4 main and 4 minor layers. The 4 main layers are:

1. The Troposphere
2. The Stratosphere
3. The Mesosphere
4. The Thermosphere

The 4 minor layers are:

1. The Ozonosphere ( in the Stratosphere)
2. The Ionosphere (the lower portion of the Thermosphere)
3. The Exosphere (the upper portion of the Thermosphere)
4. The Magnetosphere

Earth's atmosphere is made up of:

• Nitrogen (78%)
• Oxygen (21%)
• Dust particles (clouds)
• Water vapor
• Other elements(1%)

Answer 2

gases, probally oxygen and nitrogen

Sparhawk dude5: 78% of the atmosphere is nitrogen, 20% is oxygen, 2% is trace gases (helium, hydrogen etc.)