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 form of energy is being used when a person pushes a wooden block across the floor? Answer: mechanical
[A]: Mechanical form of energy is being used when a person pushes a wooden block across the floor.


[Q]: Question: What is the most abundant type of biological entity on the earth? Answer: viruses
[A]: Viruses are the most abundant type of biological entity on the earth.


[Q]: Question: How many atoms does water contain? Answer: 3
[A]:
Water contains 3 atoms.