Answer:
A marine biologist study organisms from minute phytoplanktons to huge and gigantic blue whale. A marine ecosystem contains thousands of species of organisms that are study topic of a marine biologist.
Marine biologists study the interaction of these species with their environment. The non-living things that scientific study is about the effect of change in temperature, pH, oxygen quantity, light, acidity, salinity on marine species.
Some questions that biologist ask about living things they study are :
- how many marine species are in the endangered list?
- what is the role of a species in its ecosystem?
-how the extinction of a species affects the food chain in the ecosystem?
