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The Real Difference Between Plant and Animal Cells
HowStuffWorks via Yahoo News· 7 months agoFrom the outside, plants seem pretty different from animals. For instance, plants can't walk around and catch food like we do, they give off oxygen...
What Are the Nitrogen Cycle Steps?
HowStuffWorks via Yahoo News· 7 months agoThe nitrogen cycle is the system by which nitrogen is converted into different chemical forms, some usable to humans and animals and some not, as it...
Primordial steroids solve long-standing mystery about how the 1st complex life-forms evolved
Live Science via Yahoo News· 12 months agoHere we see a virtual 3D image of little pink blobs and a white blob with lots of strands coming off...