Name two ways that the theory of evolution is currently being used to improve the quality of human life.

Evolutionary theory is today being used to understand disease, and its evolution, in biology and medicine. Therefore used to ensure the health of human.  Understanding of the theory is also being used, practically, to save endangered species such as bivalves.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation: