Cycles
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1) Life cycles
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Life Cycles describes and illustrates three different types of life-to-death-to-life again cycles that occur in nature. First is the cycle of the sunflower that grows from a seed to maturity, thus producing more seeds to begin the cycle again. Next is the mushroom cycle, involving the production of spores as a means of reproducing. The third life cycle is that of the grasshopper, which produces eggs that, once fertilized, hatch into new grasshoppers....
2) Body Cycles
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The body repairs and renews itself again and again – in cycles. BODY CYCLES describes and illustrates three of them. First is the cycle by which the body continually repairs itself, for examples by re-growing hair and nails. Next is the breath cycle, in which the lungs will with oxygen and release carbon dioxide over and over again. And third is the blood cycle, in which the circulatory system delivers oxygen and nutrients to all parts of the body....