Farmers are excited to learn that scientists have discovered that if the proton pyrophosphatase pump is in an area where the concentration gradient is too high (with too many hydrogen ions on one side), the pump works in the opposite direction. this allows more sugars to be passed into neighboring cells. sugars are needed for energy and plant growth, so in effect, this move sugars around the plant without using more materials. the plant roots grow longer and are able to absorb more nutrients. explain why this finding is important.

scientist can use this information to grow crops with larger fruits and vegetables.

Explanation:

i had this question on USA test prep and i guessed because i couldn't figure it out and when i guessed i got it right because i chose B or what ever the answer choice is for the correct answer.

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.

the awnser is d i think