I think simple diffusion is a former of active transport
The answer is D.) the process where distribution of molecules is balanced out by their movement.
Answer: C
Explanation: I'm not one hundred percent sure I know the context of this question, but biodiversity in an ecosystem means there's a wide variety of organisms, and a hotspot I assume would be an area that has an unusual amount of diversity.
The rivers discharge is usually greatest at the mouth.
:D hope this helps
