1. The Earth's atmosphere was probably formed by ...
- The heat from the sun
- Volcanic Activity
- The big bang
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Other questions in this quiz
2. What % of the Earth's atmosphere is mainly nitrogen and oxygen?
3. Non-metal atoms combine to make
4. Coal is a carbon. In a plentiful air supply it burns to form .....
- carbon dioxide
5. In a limited supply of air Coal burns to form...
- Carbon Monoxide
- Carbon Dioxide
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