What is frostbite and why is it so dangerous to your body?
Why does stepping in a puddle of water make your feet cold for the rest of the day?
The blood of an insect functions differently than the blood of a human. In humans, blood gets its red color from hemoglobin, which travels through blood vessels carrying oxygen from the lungs to the rest of the body. Insect blood, however, does not carry gasses and has no hemoglobin.