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: Sandra sees a huge glacier, and notes that it has smaller tributary glaciers flowing into it, in valleys that are 
 Answer: shallow
Smaller tributary glaciers, like tributary streams, flow into the main glacier in their own shallower U-shaped valleys.

Question: If you were to launch a cannon which ball would fly faster if everything else were the same? 
 Answer: Lighter
The mass of the particles: lighter particles will diffuse faster, because on average they move faster.

Question: What would happen to the amount of ultraviolet radiation trapped in the atmosphere if the number of greenhouse gases were decreased? 
 Answer: less would be trapped

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