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: Rachel was looking into the night sky. The darkest star is most likely: 
 Answer: the coldest
The hotter a main sequence star is, the brighter it is.

Question: Dell added lots of silica to her magma project. The magma will be _____ in color. 
 Answer: lighter
Magmas that produce lighter colored minerals are higher in silica.

Question: If the population of Mona's city has been declining recently and there are less people living there this year compared to last year, what happens to the need for resources? 
 Answer: decreased need

More people need more resources.