If carbon dioxide is needed for photosynthesis and water is plentiful, which of the following is likely to occur? a. the stomata will close until enough water is lost. b. water pressure is going to decrease in the guard cells. c. additional water will be gained and the plant cells will become rigid. d. the stomata will open until too much water is lost

parasites can detrimentally affect their host, but also must not allow their host to die before they can complete their life cycle. some parasites have complex life cycles with many different hosts, and have had to find ways of persisting in many different environments during the change from one host to another. ectoparasites live outside the body of the host, and can more easily  disperse, but are  more exposed to predators, parasites, parasitoids. endoparasites live inside the body of the host, and are therefore protected from the outside environment. but they can be  attacked by the host's immune system. they have therefore developed  mechanisms for dispersal such as  complex life cycles.

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project