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Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

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Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

Genetics – Lesson Outline & Worksheets
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Ecosystem Succession
Ecosystem Succession

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

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Cell Biology

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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Chromosome Mutations

Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..