Topic: Body Transport System Subtopic: What is blood?
Where are red blood cells made?
Answer: When old ones die, new red blood cells are produced in the bone marrow, which fills the center of the large bones like shin bone.
- Why is reproduction important?
- What is ovule?
- What are properties of blood in arteries?
- What are companion cells?
- What is meant by word extinct?
- What is diaphragm?