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Cell respiration is the process of creating ATP. It is "respiration" because it utilizes oxygen. Know the different stag..

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

Non-Mendelian Inheritance
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In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

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Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..

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Bryophytes

Bryophytes are a plant group characterized by being nonvascular. They include the mosses, the liverworts, and the hornwo..