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Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

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Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

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This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

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Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

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Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..

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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..

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