I can’t sleep any solutions?

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

Providing immunity by injecting the body with a weakened form a pathogen is known as

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.