Title: What conditions are required for life? | HowStuffWorks
Headings: What conditions are required for life?
What conditions are required for life?
Content: NASA ]. These systems need to be able to replenish nutrients, which is no problem if your planet has events like volcanic eruptions or weather systems that produce water. But here's the rub: While scientists can pretty confidently assert those things might be necessary for life on Earth, we should remember that we're basing all our assumptions on, well, Earth. We can't know for sure if other planets or moons could be harboring a "life" form that doesn't require the same things Earth-bound systems do. In the meantime, we'll look for the planets with nutrients, energy and water. Advertisement
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Kate Kershner     "What conditions are required for life?" 22 September 2014.