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: If Mona's country normally emits not a lot of greenhouse gas, but one day decides to raise the amount they emit, what will happen to the global temperature? 
 Answer: increase
A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.

Question: Jeff found some very dense water. He knows it is dense because it takes up _____ space than less dense water. 
 Answer: less
More dense water takes up less space than less dense water.

Question: A light with a very long wavelength has 
 Answer: low energy

The higher the frequency is, the more energy a photon has.