Guiding Question: What environmental factors are needed to sustain life on another planet? Claim: (make a statement about activi
ties (natural and human impact an ecosystem) Evidence (put your data, graphs, text, etc. that helps to support your claim & explain how here) Justification (identify the Scientific Principals to which your Evidence is connected here)
Life on Earth uses only two types of energy for metabolism: sunlight and redox chemistry ... One or the other has to be present, and if you're in the habitable zone of a star, you at least have enough light to support photosynthesis. So you have the right temperature, water, and sunlight. What else do you need?
