Identify which type of natural selection is described in each case below.
results in the evolution of the species:
results in new species:
favors traits at the two extremes:
no increase in diversity:
one extreme trait is favored:
diversity decreases:
diversity increases:

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.