The heart, blood vessels, and blood help to regulate body temperature.
Answer:
Making the earth green
Explanation:
-Reduce, reuse, and recycle.
-Volunteer for cleanups
-plant trees
-Conserve water
There are tons of way to earth a better place!!!
Answer:
not really, however if the resting heart rate is below 60 bpm, then bradycardia can be a serious problem because the heart rate is very slow and the heart can't pump enough oxygen-rich blood to the body.
Explanation:
Age, gender, heredity, and race.