George is running a 5-km race and his cells need more oxygen. The change that will help his body meet the increased demand for oxygen is his heart will start beating more quickly. This helps the oxygen get ferried throughout the system faster. The correct answer is A.
A. Warning signs, they can make the person with the illness more ill, they could feel neglected or like no one understand what they are doing and can't see the signs but jn some cases it's the person with the illness that doesn't know like bipolar people might not know they are bipolar until the test.
Answer:
Need to go to a doctor
Explanation:
There are a lot of asumptions and with that same symptoms
Sleeping
sleeping isn’t a cool down excersise, because you should still be physically active and sleeping isn’t one of them.
Answer:
d.respiratory system and cardiovascular system
