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.

[EX Q]: Question: If Mona is measuring the size of a glacier at the North Pole and she notices that it has been getting smaller over the years, what can she conclude about the Earth's temperature? 
 Answer: increasing
[EX A]: The glaciers on Earth are getting smaller and smaller as Earths temperature rises.

[EX Q]: Question: What would happen to the atmosphere as Jim climbed higher up a mountain? 
 Answer: it would become less dense
[EX A]: The density of the atmosphere decreases with an increase in the height above sea level (altitude).

[EX Q]: Question: Dell added very little silica to her magma project. The magma will be _____ in color. 
 Answer: darker
[EX A]:
Magmas that produce lighter colored minerals are higher in silica.