Agroup of mice becomes separated by the formation of a river. over time, the northern mice became smaller and whiter, while the southern mice became larger and browner. this is an example of:

Variety of living organisms; includes genetic, species, and ecological types.

What organ systems are working to you cool down after a workout?

An organism's reproductive strategy includes all of the following except a. the number of offspring produced. b. the amount of energy expended in producing offspring. c. the length of time parental care is given d. the number of alleles an organism passes on.