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Questions and Answers
What is the main source of oxygen in the atmosphere?
What is the main source of oxygen in the atmosphere?
- Volcanic ash
- Nitrogen
- Photosynthetic organisms (correct)
- Pollen
What is the result of photosynthesis?
What is the result of photosynthesis?
- Carbon dioxide (CO2) to nitrogen (N2
- Carbon dioxide (CO2) to oxygen (O2 (correct)
- Oxygen (O2) to nitrogen (N2
- Oxygen (O2) to carbon dioxide (CO2
What is air made up of?
What is air made up of?
- Solid particles
- Gaseous particles
- Atoms and molecules (correct)
- All of the above
