The process of natural selection is outlined below. Fill in the blanks in the following statements.
Populations naturally show in their characteristics.
conditions in an area change causing more competition between individuals.
By chance, some individuals are better for this change and survive.
The survivors reproduce and pass on these to their offspring.
Which of the following definitions most accurately describes a species?
Variations in alleles produce different observable characteristics in organisms. What term is given to the physical characteristics of an organism?