Bones are to support our body and to protect internal organs.
Answer:
When you are exercising, your muscles need extra oxygen some three times as much as resting muscles.
This need means that your heart starts pumping faster, which makes for a quicker pulse. Meanwhile, your lungs are also taking in more air, hence the harder breathing
Answer:
To send blood through the body.
Explanation:
“Every time your heart beats, it sends blood throughout the body.”
D) Water purification programs because if water is contaminated, it can produce a huge amount of illness and sickness worldwide.
