If a person were to place a marine fish into a fresh water lake, water would diffuse

1. up its concentration gradient and enter the fish.
2. down its concentration gradient and enter the fish.
3. down its concentration gradient and exit the fish.
4. up its concentration gradient and exit the fish.
5. none of the choices are correct.

2

Explanation:

Osmosis is the process by which solvent diffuses through a selective permeable membrane from a low solute concentration zone to a higher one.

In this example, the fish skin represents that selective membrane. Also, we are told that is a marine fish. Sea water have higher concentration of salt and fishes are adapted to it, their cells have also high concentrations of salt compared to freshwater fishes.

If a person placed this marine fish into a fresh water lake, water (solvent) would diffuse down its concentration gradient (from high water concentration in the lake to lower, inside the fish) and therefore enter the fish.

1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)