The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..
Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..
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This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..
Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..
