Cell structure over time is known as a free radical
Answer:
Permanent brain damage begins after only 4 minutes without oxygen, and death can occur as soon as 4 to 6 minutes later.
Explanation:
So a person can survive 4 to 6 minutes without oxygen, but may experience brain damage.
A foot and a leg? teeth and gums? a train engine and a box car? q and u?
I’m pretty sure it’s c. (You were right lol)
Answer: Those parts is were all the oxygen is distributed through the human body, and so technically it can be considered the respiratory system.