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: Tony wanted to prevent cramps by not warming up. This _____ blood flow to his muscles. 
 Answer: decreases
[A]: Warming up exercises increases the blood flow to the muscles and increases the heart rate.


[Q]: Question: Sarah's plants have been struggling to photosynthesize regularly, so that means that the plants now produce food in amounts that are 
 Answer: lesser
[A]: Less photosynthesis means that plants and phytoplankton produce less food.


[Q]: Question: After Sarah finishes her walk, she notices that her blood is not really pumping that hard. Sarah can know that since it's a cool day, she's giving off what kind of heat compared to usual? 
 Answer: less
[A]:
On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body.