Why do you suppose that there is a delay between the time of hiv infection and the appearance of symptoms (and aids)?

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

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.