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Image courtesy of Corel Photography
This green slime, also known as algae, may have been among the earliest life on Earth. Algae self-feeds by way of photosynthesis and only indirectly contributes to the weathering of the rock on which it resides.
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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