The diagram illustrates the apparatus a student uses to study respiration in woodlice (small arthropods). Which explanation of the direction in which the water drop will move is correct?
- AThe water drop will move away from the woodlice because respiration uses carbon dioxide.
- BThe water drop will move away from the woodlice because respiration uses oxygen.
- CThe water drop will move towards the woodlice because respiration uses carbon dioxide.
- DThe water drop will move towards the woodlice because respiration uses oxygen.