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Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
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Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..
Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..
Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..