1. explore how the human system can be modified into a sustainable ecosystem in balance with other natural ecosystems without losing the benefit of modern civilization. in other words can we live sustainable without losing our modern standard of living.

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.

bal is blood alcohol level. bac will normally be higher in a person with more body fat. so the answer to your question would be, as body fat decreases, the increasing rate of bal decreases.