The composition of the atmosphere
- Created by: Brad_ers_B
- Created on: 21-05-14 13:03
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- The composition of the atmosphere
- Nitrogen (78%)
- Used in proteins
- Oxygen (21%)
- Used in aerobic respiration
- Carbon dioxide (0.038%)
- Used in photosynthesis
- Methane (0.00017%)
- Some chemoautotrophs use methane as source of carbon
- Was important for early life and still important in the deep oceans
- Ozone (0.000007%)
- Absorbs UV light in stratosphere
- Water vapour (Variable, up to 4%)
- Water in the water cycle distributed in the atmosphere
- Nitrogen (78%)
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