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 Milo has asthma and moves to the city, what can happen to his asthma? 
 Answer: gets worse
Certain respiratory conditions can be made worse in people who live closer to or in large cites.

Question: Mike is trying to make two different things slide across the ground. One is block, the other is a chair. The thing that will be hardest to push has 
 Answer: more mass
Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor.

Question: Carl is studying climate change, and notes that less ultraviolet radiation is being trapped, which means the earth will be 
 Answer: cooler

If there are more greenhouse gases in the atmosphere, more ultraviolet radiation will be trapped and the Earth will heat up.