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If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

Cell Biology
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The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..

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The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..

Photosynthesis and respiration
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Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

Plant biology
Plant Biology

Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

Origins of Life on Earth
Origins of Life on Earth

Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..