yes.
The smell and if you are allergic, the sickness.
All living things need water.
Yes. People can develop allergies to most anything at any time. And many people are allergic to fin fish.
If you are allergic to fish, no.
There are people who can eat fish but who are allergic to shellfish, though that is not a guarantee eating fish is ok for any given individual.
2 ways that Fish are adapted to living in water are gills and fins, or scales ( streamline) and protected eyes.
No, it will kill it.
Gills
tdyt
fish,plant&marine life,also people because people use the ocean to make a living
No.
Yes. For example, humans can eat the fish and other living creatures that live in the contaminated/polluted water, and the effects can be harmful.