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Image courtesy of Corel Photography
Photosynthesis is the name of the process by which autotrophs (self-feeders) convert
water, carbon dioxide, and solar energy into sugars and oxygen.
If it weren't for the photosynthetic activity of early bacteria, Earth's atmosphere would still
be without oxygen and the appearance of oxygen-dependent animals, including humans,
would never have occurred!
This means one way to detect life's activity on a distant planet is to look for significant levels
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Shop Windows to the Universe Science Store!
Learn about Earth and space science, and have fun while doing it! The games
section of our online store
includes a climate change card game
and the Traveling Nitrogen game