In what cell organelle does cellular respiratation occur

What are two reasons for why a species might disappear from the fossil record?

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.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol