The table indicates that nitrogen and oxygen are the main components of the atmosphere by volume. Together these two gases make up approximately 99% of the dry atmosphere. Why are these gases important?

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asked Feb 28, 2020 104k views

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The table indicates that nitrogen and oxygen are the main components of the atmosphere by volume. Together these two gases make up approximately 99% of the dry atmosphere. Why are these gases important?

A) They are essential to life on Earth.
B) They have a great influence on climate.
C) They absorb ultraviolet radiation from the sun.
D) They increased over time causing global warming.