Answer:
It's Gills because there not human and use gills to breathe in water
Answer: i hope that helps ^^
Explanation:
Emotions such as anger and hostility ramp up your "fight or flight” response. When that happens, stress hormones, including adrenaline and cortisol, speed up your heart rate and breathing. You get a burst of energy. Your blood vessels tighten.
He could race multiple cars with different weight added on them and do multiple races (just to be sure) and see if his theory was correct, if not he should right down what he has learned from his experience! :D
-You'll never learn if u don't try ;)
