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Questions and Answers
Which gas makes up the majority of Earth's atmosphere?
Which gas makes up the majority of Earth's atmosphere?
- Argon
- Nitrogen (correct)
- Carbon Dioxide
- Oxygen
Which gas is present in the smallest amount in Earth's atmosphere?
Which gas is present in the smallest amount in Earth's atmosphere?
- Nitrogen
- Carbon Dioxide
- Argon
- Oxygen (correct)
What is the purpose of the layered composition of Earth's atmosphere?
What is the purpose of the layered composition of Earth's atmosphere?
- To protect against solar wind
- To regulate temperature
- To minimize the harmful effects of sunlight (correct)
- To provide oxygen for respiration
What is the outer region of a star called?
What is the outer region of a star called?
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What is the main gas used by organisms for respiration?
What is the main gas used by organisms for respiration?
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