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Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..

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Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..

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Genetics – Lesson Outline & Worksheets

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Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..

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Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..