Answer:
Girls have menstrual cycles because girls have changes of hormones in their body. The hormones make the lining of the uterus build up. This gets the uterus ready for an egg which when the egg is released it causes a period also known as a menstrual cycle which happens normally every month for at least 3-7 days.
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Answer:
The three interlocking, overlapping arrows symbolize the three objectives of conservation: - maintenance of essential ecological processes and life-support systems; - preservation of genetic diversity; - sustainable utilization of species and ecosystems.
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