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.

Q: Question: What causes waves to bring sand up onto the beach during summers? Answer: low energy

A: Low energy causes waves to bring sand up onto the beach during summers.
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Q: Question: What is defined as the temperature plus precipitation of an area over a long period of time? Answer: climate

A: The climate is defined as the temperature plus precipitation of an area over a long period of time.
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Q: Question: Sodium-potassium pumps help nerve cells establish a voltage across their what? Answer: plasma membranes

A:
Sodium-potassium pumps help nerve cells establish a voltage across their plasma membranes.
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