Ecology is one component of Environmental Science that studies organismal interactions.
So your answer is c. interactions
Thalamus relays information from eyes to the visual cortex. Thalamus organizes inputs from sensory organs and routes them to the appropriate areas of the brain. I hope that this is the answer that you were looking for and it has helped you.
I also believe it is C.
All of these organs, skin, lymph nodes, white blood cells, and spleen, act to enhance human immunity.
Yes i bleve that during diffsion molicules move.