Describe a method a woman could use to follow her BBT (basal body temperature) during one menstrual cycle.

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.

Which of these parts of the membrane large moecules pass through it ?

How does the human body lever work?