1. Where did life first evolve?
- In the oceans
- In the sky
- In the rainforest
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Other questions in this quiz
2. By which process was oxygen first released into the atmosphere?
- Aerobic Respiration
- Anaerobic Respiration
3. Ozone is made of how many oxygen atoms?
4. What is the purpose of the ozone layer?
- To block visable light
- To block harmful microwaves
- To block harmful UV radiation
- To keep UV radiation on Earth
5. Which of these gases do volcanoes release?
- Nitrogen Dioxide