Active transport systems are a form of cell transport that requires energy from molecules of

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Any sound above what db can cause hearing loss in human beings

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.