The process by which a white blood cell engulfs, digests, and destroys a microscopic foreign invader is known a

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.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

How many major plates cover the earth