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.

Question: You can find tables that show the pH value of different fruits and vegetables. The fruits such as oranges are very acidic so they have a pH value that is 
 Answer: lower
Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.

Question: Alan has a rubber band on his hands. He pulls his hands apart and the rubber bands force 
 Answer: increases
The farther apart you move your hands, the stronger the force of the rubber band pulling your hands together.

Question: If Jim begins emitting more greenhouse gases into the air it means that the air will become 
 Answer: warmer

More greenhouse gases trap more heat and warm the atmosphere.