Evolution of Earth's atmosphere
Quiz by Oak National Academy: GCSE Chemistry AQA Foundation
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6 questions
Show answers
- Q1Earth's atmosphere comprises approximately 21% of which gas?Users enter free textType an Answer30s
- Q2What is the percentage of carbon dioxide in Earth's atmosphere?78%0.04%21%1%30s
- Q3How old is Earth thought to be?200 billion years4.5 billion years2 million years4 million years30s
- Q4The atmosphere on Earth has been in roughly the same proportions for how many million years?Users enter free textType an Answer30s
- Q5What name is given to the layer of gas that surrounds a planet?Users enter free textType an Answer30s
- Q6What is the name of this process?sedimentationrespirationcombustionphotosynthesis30s
