What are the 4 main elements of life?

Related questions

1. What does a mushroom need to grow?
2. What states are mushroom spores illegal in?
3. Are Mushroom spores legal?
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5. What are the 5 main elements of life?
6. What part of the oyster mushroom is edible?
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Tags

1. #elements
2. #about
3. #these
4. #believe
5. #scientists
6. #oxygen
7. #human
8. #known
9. #essential
10. #nitrogen
11. #hydrogen
12. #carbon