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: Jean is looking at a rock face that shows the layers of the Earth. Jean notes that the rocks towards the top of the exposed cliff have an age that is 
 Answer: lesser
Older layers are deeper in the Earth, younger layers are closer to the surface.

Question: If Milo is out exploring and he comes across two glaciers, each with their own u-shaped valley, will the smaller or larger glacier have a smaller u-shaped valley? 
 Answer: smaller glacier
Smaller tributary glaciers, like tributary streams, flow into the main glacier in their own shallower U-shaped valleys.

Question: Rich works out every day. Paul does not work out at all. Whose heart expels less blood per contraction, resulting in lower BPM? 
 Answer: Paul

When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.