True .
Our bodies don't feel that urge of water in cold conditions, we become dehydrated without knowing it . In hot conditions we sweat .
Answer: The sympathetic nervous system connects the internal organs to the brain by spinal nerves. When stimulated, these nerves prepare the organism for stress by increasing the heart rate, increasing blood flow to the muscles, and decreasing blood flow to the skin.
Explanation:
The reason that you can tell that it was chemical is because you can see the bubbles forming. This means that it is giving off a gas.
As you go farther up into Earth's atmosphere, there is less are and less pressure!
