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A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

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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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This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..

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Early Mammals on Earth

The Earth's ecosphere was rapidly changing and throwing up a wide range of ecological niches that new adaptive organisms..

Neural Control Mechanisms
Neural Control Mechanisms

Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..