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Questions and Answers
What is the most abundant gas in Earth's atmosphere?
What is the most abundant gas in Earth's atmosphere?
- Carbon dioxide
- Argon
- Nitrogen (correct)
- Oxygen
Which layer of the atmosphere is closest to the Earth's surface?
Which layer of the atmosphere is closest to the Earth's surface?
- Stratosphere
- Mesosphere
- Thermosphere
- Troposphere (correct)
What causes the greenhouse effect?
What causes the greenhouse effect?
- Release of heat from volcanic activity
- Absorption of heat by the ozone layer
- Trapping of heat by certain gases in the atmosphere (correct)
- Reflection of sunlight by the Earth's surface
