Question: Answer the following question given this paragraph:   Neurons are usually classified based on the role they play in the body. Two main types of neurons are sensory neurons and motor neurons.   Q: What do you call the zone in a body of water where there is too little sunlight for photosynthesis?   Choices:  - semimetal zone  - Dark Zone  - observable zone  - aphotic zone  A:
Answer:
aphotic zone