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The Evolutionary Development of Multicellular Organisms

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

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This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..

Genetics – Lesson Outline & Worksheets
Genetics – Lesson Outline & Worksheets

  Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..

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The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

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A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

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Chemical Composition of the Body

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