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New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..

Population Regulation in an Ecosystem
Population Regulation in an Ecosystem

With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

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The Gene Pool and Population Genetics

According to Charles Darwin's theory of natural selection, preferable genes are favored by nature in the gene pool, and ..

Independent Assortment and Crossing Over
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This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

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The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..

Chemical composition of the body
Chemical Composition of the Body

The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..