. Multiple people came forward claiming to be parents of a recent murder victim - John Doe. For the first set of parents, the man has type AB blood, the woman has type O blood and the victim has type O blood. What is the percent chance that these are the parents of the victim? (Hint: set up a punnett square to solve)

0% chance
25% chance
50% chance
100% chance

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer? a. the chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced. b. the chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production c. free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone. d. chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone select the best answer from the choices provided

9. the history of life on earth is recorded in

One of the reasons that stars are so large is because