Water is warmed by the sun and it is cooled and finally it is brought back to earth in the form of

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.

Name the organs of humanelemintary canal.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?