* The spongy layer of a leaf and the lungs have a similar structure because
they are made of tissues
they perform a similar job
they belong to only one organ

List two limitations of natural selection

Dna is colied into chromosomes in a cell

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.