As part of a blood drive on campus for the american red cross, you and your friends have just donated 500 ml of blood. you are now relaxing at the student lounge, waiting for a& p lab to begin. unfortunately, even though you are thirsty, you haven't bothered to buy yourself a drink. other than a little soreness of the skin and tissue around your median cubital vein, you feel fine. how has your 500 ml decrease in blood volume most likely affected your cardiac output, heart rate, and stroke volume?

Nextend of semester testsubmit testreader toolsinto-samosquitoes in tropical regions can carry and transmit the malaria parasite to humans. the mosquitoes used to be killed in these regions by sprayingthem with the insecticide ddt. the mosquitoes that were earlier sensitive to ddt are now not killed by ddt and grow and multiply even in the presenceof ddt. how can you explain this phenomenon? oa.all of the mosquitoes must have undergone a mutation for ddt resistance and produced similar kind of resistant offspring, whichevolved into a ddt resistant population.b.some of the mosquitoes must have undergone a mutation for ddt resistance and produced similar kind of resistant offspring, whichwould have been selected by nature,oc.all of the mosquitoes must have slowly increased their tolerance level to ddt and ultimately would have become completely resistantto ddtresetnextnext