Given a scientific passage and an answer, generate a question for the given answer.

Q: Passage: Only the top 200 meters or so of water receive enough sunlight for photosynthesis. This part of the water is called the photic zone. Below 200 meters, there is too little sunlight for photosynthesis to take place. This part of the water is called the aphotic zone. In this zone, food must come from other sources. It may be made by chemosynthesis, in which microorganisms use energy in chemicals instead of sunlight to make food. Or, food may drift down from the water above. Answer: photic zone

A: What is the top part of water able to receive enough sunlight for photosynthesis called?
****
Q: Passage: Figure 5.3 This phospholipid molecule is composed of a hydrophilic head and two hydrophobic tails. The hydrophilic head group consists of a phosphate-containing group attached to a glycerol molecule. The hydrophobic tails, each containing either a saturated or an unsaturated fatty acid, are long hydrocarbon chains. Answer: hydrophillic head , and hydrophobic tails

A: What two things are a phospholipid molecules composed of?
****
Q: Passage: Neptune is very cold and has very strong winds. It had a large dark spot that disappeared. Another dark spot appeared on another part of the planet. These dark spots are storms in Neptune's atmosphere. Answer: storms

A:
The planet neptune has strange dark spots that sometimes appear on its surface? what are these spots?
****