Which of the following affects the intensity of the combustion reaction of a bunsen burner?

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. this is an example of speciation.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Which is one example of a phenotypic change that is not genetic