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: Scientists discovered a region where there was a much smaller amount of greenhouse gases getting caught in the atmosphere. Compared to other regions, this region's atmosphere will have a 
 Answer: lower temperature
More greenhouse gases trap more heat and warm the atmosphere.

Question: Between a marble and a cannon ball, both travelling at the same speed, the object with the least momentum would be 
 Answer: the marble?
The more mass a moving object has or the faster its moving, the greater its momentum.

Question: A smaller alkenes will melt _____ than a bigger one. 
 Answer: sooner

Larger alkenes have lower boiling and melting points.