Methyl-mercury is an example of a(n) . pesticide
fossil fuel
anesthetic
antibiotic

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human impact on the environment can be seen in the deterioration of the !

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the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

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