Answer:
1.The only muscle that is always active and ceases only when we pass away is the heart.
2.An estimated 15 million blood cells are lost per second.
3.Every day, 200 billions of platelets, which are the disk-shaped pieces of blood cells, are created.
4.An infant's blood volume is only one liter, compared to an adult's normal 5–6 liters.
Step-by-step explanation: