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.

[Q]: Question: Chris is studying Lake Michigan. He takes soil samples from the Lake in two places. The first sample he takes from right near the shore. The second sample is taken from the middle of the lake. The _____ sample will have greater dissolved nutrients in it. 
 Answer: first
[A]: Water near shore generally has more dissolved nutrients than water farther from shore.


[Q]: Question: An increase in food will likely lead to _____ lifespans. 
 Answer: longer
[A]: New farm machines were invented. They increased the amount of food that could be produced. With more food, people were healthier and could live longer.


[Q]: Question: Sally is pulling two wagons. The red wagon is full of sand, and the blue wagon is empty. The wagon that will be easier to pull is the 
 Answer: blue wagon
[A]:
The full box is harder to move because it has greater mass and therefore greater inertia.