How does heart failure affect the lungs? a. blood leaves the lungs. b. fluid can build up in the lungs. c. carbon dioxide enters the lungs. d. too much oxygen enters the lungs.

Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. what could he have done to increase the validity of his data? reduce the number of plants. remove the 1 hour group. add a 0 hours control. measure the oxygen in liters

If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain