State the difference between osmosis and active transport

Osmosis is movement of water molecules from an area of their higher concentration to area of their lower concentration through a semipermeable membrane.

Active transport is movement of molecules from an area of their lower concentration to area of their higher concentration using energy in form of ATP by pump proteins.

Explanation:

transport system is consider as the opposite to osmosis. Because you are going against the gradient, active transport requires a pump or carrier protein in the cell membrane and therefore energy (made through respiration).

1 a 2b 3increase

Explanation:

Genetically fishes have gills to inhale they take water through gills and u know water has some amount of oxygen

2 predators increase because many fishes eat each other bcz of competition

3 so relating point 2 competition also increase