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: Leo notices a large amount of stored glucose in his cell. Ray notices zero stored glucose in his cell. Whose cell likely underwent more photosynthesis? 
 Answer: Leo
As photosynthesis increases, the amount of stored glucose in the guard cells increases.

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: Derek felt warm as he stood in the sun, and since his body was heating up, he knew that his blood vessels in his skin were 
 Answer: expanding

When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in diameter.