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: Peter removed salt to his juice one morning. The mixture became _____ dense. 
 Answer: less
If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.

Question: Compared to a solution of acidic vinegar, would basic lye have a pH value 
 Answer: farther away from 0?
The more acidic a solution is, the closer its pH value will be to 0

Question: Terry's system wastes 50% of its energy, while Rick's system wastes 75%. The less efficient system is 
 Answer: Rick's

The greater the wasted output energy, the less efficient the system.