Questions -
1. Can the biosphere be considered an earth system? How would that system be described?
2. How do autotrophs differs from heterotrophs?
3. What is metabolism?
4. In what environment might you find extremophiles? Can humans live under extreme conditions?
5. Explain how life is related to water? What would happen if all the water on earth turned to ice?
6. What's the difference between photosynthesis and respiration?
7. What contains the habitable zone around stars?
8. Carbon and water are the basis for all life as we know it. If a giraffe made from silicon walked past one of the Hard Exploration Rovers, how would we know it was alive?