fact and question: a solar eclipse could only happen during the new moon
Question: a full moon will block which of these

What's the answer?

answer: solar eclipse

fact and question: polluting means something poisonous is added to an environment causing harm to the environment
Question: Water needs to be clean in order for someone to safely drink it. Drinking polluted water is bad because it is the same as drinking

What's the answer?

answer: poison

fact and question: winter is when a hemisphere is tilted away from the sun
Question: What happens when a hemisphere is tilted away from the sun?

What's the answer?

answer: cools

fact and question: An example of avoiding waste is using an object more than once
Question: One example of avoiding waste when grocery shopping is to bring your own

What's the answer?

answer:
cloth satchel