The answer is : B) Inner Ear.
Answer: Mutualism
Explanation: The definition of mutualism states " interaction between two or more species where each species has a benefit". The bird is getting food from the insects and the horse is getting the insects removed. Both are benefited.
I would say that this is the cell wall because it provides strength and protection for the cell. The armor for Nights is protection for the person inside of the armor. Hope this helps!
Passive transport is the movement of substances across the membrane without the expenditure of cellular energy.
