Answer:
Mammals are different from fish, reptiles or birds
Explanation:
This is the correct answer because since dolphins are mammals, they are very different from the other types of animals such as fish, reptiles, or birds; this is emphasized in this paragraph ;)
With the gradient because the molecules are going from high to low concentrated areas
It means to persuade mostly, so your answer is D.
Her mother is her final opponent because her mother had so much more power over her and she wanted to break free. Also because she imagined her mother to be her final.