Why do you think electron microscopes allow for greater magnification than compound microscopes?

Electron microscopes allow for greater magnification than compound microscopes because electron microscopes use electrons and compound microscopes use visible light to see objects. Compound microscopes use visible light of minimum wavelength of 400 nano meter by which we can not see objects smaller than 200 nano meter m. But in electron microscope electrons has wavelength thousand time shorter than the visible light. therefore, electron microscope can see objects which are in nano meter.

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.

this is a good question! i'll do some research and come back when i have the answer!