Which of the following explains what happens if two or more sperm fertilize two or more eggs? genetic reassortment

cell division

genetic mutations

multiple births

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.

If something is painful during exercise, what should you do? a. back off the exercise. b. modify the exercise. c. consult a physician if the pain persists. d. all of the above

Which of the following is true about vigorous intensity movements. playing single tennis or riding a bike on a hilly surface playing soccer riding bike on a flat surface playing double tennis or playing basketball all of the above