Mass is a measure of how much matter an object has. Weight is a measure of how strongly gravity pulls on that matter.
I believe it’s carbon dioxide, because you use your respiratory system to breathe in oxygen, and oxygen goes through your circulatory system. And you breathe out CO2.
If their receptor are still fuctioning, then yes.
There are four states
1)Alert: The person is basically still alive
2)Verbal: About to be unconcious
3)Pain: Verbal but can still feel pain
4)Unconcious: About to die, the body will feel cold but the heart is still beating.
