1.the of a cell allows it to perform its
2.the of a cell includes are structures that perform the functions the cell needs to live.
3.cells are the functional units of .
4.the amount of material a cell needs to function is determined by its

Analogy- 1 is to arete as 5 is to cirque horn glacial valley hanging valley

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.

Heat from earths interior and pressure from overlying rock transform the remains of marine sediments into