Generate a sentence that answers this question: "To measure the length of a elephant's trunk you would need".

Answer: a meter stick is used to measure length

Generate a sentence that answers this question: "Glaciers doing what has a negative impact on the glacial environment?".

Answer: glaciers melting has a negative impact on the glaicial environment

Generate a sentence that answers this question: "What are sources of shelter for small animals?".

Answer:
rocks are a source of shelter for small animals in an environment