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E-book Growing Up Ok!
Hormones are chemicals that are made by organs called glands in your body. During puberty the most important gland is the pituitary gland. This tiny gland (at the base of the brain) tells other glands to start making hormones. The pituitary gland also makes the human growth hormone which makes the bones and muscles grow faster during puberty. Hormones also cause sexual and reproductive organs t…
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- 612.661 MAN g
E-book Soil Management Guide
Soils vary signifi cantly in their properties. They may be deep in some places, shallow in others, black or gray in colour, sandy or clayey in texture. Although the soil mantle covering Manitoba is far from uniform, all soils have some common factors. For example, all soil is a mixture of organic and mineral material plus water and air. While the major components remain the same, the proportion…
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- 157 hlm
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- 577.57 MAN s
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