Answer:
1649 years
Explanation:
It took 1649 years for the world population to double, going from . 25 billion people to . 50 billion people
Answer: Caecum of the intestines
Explanation:
The caecum is located in between the large intestine and the ileum and the colon. It is referred to as blind gut because one end of it is close and the other continues into the colon.
The ans. is vein and capillaries transporting and importing blood from and to the body system.