Question

Which phrases describe oxygen's roles in Earth’s atmosphere? Check all that apply.


allows fuels to burn

forms clouds that produce rain

is the gas that animals breathe

is used by plants to produce food

forms ozone that absorbs the Sun's harmful rays

Answer 1

Oxygen: Oxygen is one of the essential gases for the living beings to survive. The plants produce oxygen as a result of photosynthesis and it has a wide range of role in Earth's atmosphere.

Roles:

Allows fuels to burn - Oxygen is the reason for combustion

Is the gas that animals breathe - Survival is possible only because of oxygen.

Forms ozone that absorbs the Sun's harmful rays - Ozone layer is made up of O3 which is oxygen.

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