Amy walks up to the rapidly-flowing river at the waterfall. She observes it transporting a lot of sediment. What happens to the sediment as it flows downstream? To find out, she goes to the end of the steep canyon where the river becomes wider and
shallower. What process takes place as the river slows down?

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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c. is the correct answer