I believe the answer is: Different scientists use different data for investigation.
I say that because different scientists have different equipment, ideas, and have different methods. I hope I was right and i hope it helped and i wasn't to late to answer this question.
Answer:
Sweat glands
Explanation:
Humans sweat to cool down their bodies after an excess workout or activity.
Answer: down
Explanation: bio teacher here
I believe it is 17004 & 17110. Hopefully this helps! :-)