instruction:
In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.
question:
Question: Corals build hard exoskeletons that grow to become what? Answer: coral reefs
answer:
Corals build hard exoskeletons that grow to become coral reefs.


question:
Question: When substances pass through the cell membrane without needing any energy what is it called? Answer: passive transport
answer:
When substances pass through the cell membrane without needing any energy, it is called passive transport.


question:
Question: When drinking water is treated, what is the term for when chemicals cause solids in the water to clump together? Answer: coagulation
answer:

When drinking water is treated, the term for when chemicals cause solids in the water to clump together is coagulation.