List three tasks that oceanographers completes most days

Oceanographers by profession are those that study all the elements that are related to the ocean. They mostly study the following things-

1) They study the ocean waves, including the factors that generated a wave of different wavelengths and amplitudes, an how the wave pattern changes from the sea surface to the bottom.

2) They study the temperature and the density difference from the low latitude region to a region of higher latitudes and what are the factors that re responsible for these changing temperatures and salinity conditions.

3) They also study the composition of the ocean water and the effects of tide on the waves.

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.