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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
- Carbon Dioxide
- Nitrogen (correct)
- Oxygen
What is the main role of nitrogen-fixing bacteria in the soil?
What is the main role of nitrogen-fixing bacteria in the soil?
- To convert nitrogen into a usable form (correct)
- To produce oxygen
- To remove carbon dioxide from the atmosphere
- To increase the amount of argon in the atmosphere
What gas was predominantly present in the Earth's atmosphere during the first billion years?
What gas was predominantly present in the Earth's atmosphere during the first billion years?
- Nitrogen
- Argon
- Oxygen
- Carbon Dioxide (correct)
What caused the decrease in atmospheric carbon dioxide and increase in oxygen?
What caused the decrease in atmospheric carbon dioxide and increase in oxygen?
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What is a barometer used to measure?
What is a barometer used to measure?
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