Oxygen because we need it to breath if that’s the wrong anwser sorry but it should be right
Answer:
Because of evolutionary traits based on the environment.
Explanation: This is probably because they live in a similar environment, so they both evolved to have similar adaptations to make them excel in that specific enviroment
Them the solution is hypertonic. This means that the water within the cell would exit it and go outside and the cell would shrink.