In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Example Input: Question: If Mona is building a machine to help her vacuum her floor and she decreases the amount of force the engine inside the vacuum, what happens to the vacuum ability to make work easier? 
 Answer: decreases
Example Output: Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied.

Example Input: Question: Carol is building a small rocket to test in her back yard and, after much consideration, decides to use a biofuel to power her rocket. She tells her friends it's because it will create _____ carbon dioxide than fossil fuels. 
 Answer: less
Example Output: The advantage to biofuels is that they burn more cleanly than fossil fuels. As a result, they create less pollution and less carbon dioxide.

Example Input: Question: Will was farming in a poor country when he noticed he his energy consumption was high. Despite this, his consumption of energy is likely much _____ than that of a rich country. 
 Answer: lesser
Example Output:
People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.