Prokaryote cells have a nucleus? true or false?

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.

Depending on the organism the number of in a cell may change

In the water cycle , when does water undergo a chemical change