Humans have developed different horse breeds using the process of selective breeding.

how is selective breeding different than evolution by natural selection?

a.
favorable traits are selected in selective breeding but not in natural selection.

b.
natural selection is completed in one generation, but selective breeding is not.

c.
favorable traits are selected in natural selection but not in selective breeding.

d.
selective breeding is completed in one generation, but natural selection is not.

Asoccer mom is driving her 75 year old grandmother and her 9 year old daughter home after the game. the grandmother and daughter were both in the back seat and both were wearing their seat belts. a car ran a red light in front of them, causing them to t-bone that car on the passenger side. fortunately there were no serious injuries, but the grandmother did sustain several rib fractures. the mother, daughter and driver of the at-fault car were shaken up but unhurt. what are some possible reasons that the grandmother sustained rib fractures while the other victims did not?