Of two organisms with leaves and shoots and roots and blooms, one was considered a plant, and the other was not. What made us ...

So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that ...

An organic label means eggs come from hens that are fed grains without synthetic pesticides or GMOs. The birds cannot be raised in cages or given antibiotics. They must have some outdoor access.