Question

1. why is it important that blood can clot and scabs can form?
2. where in the body are blood cells made?
3. what would happen if we had too few white blood cells or none at all?
4. match the blood part on the left with its job on the right.

scab a holds the other parts of blood
plasma b protects a wound and stops bleeding
red blood cells c carry oxygen to the cells

Explanation:

1. Blood - clotting and scab - formation are crucial for preventing excessive blood loss when there is an injury. They form a protective barrier over the wound, which also helps in the initial stage of wound - healing and prevents infections from entering the body through the open wound.
2. Blood cells are made in the bone marrow. Red blood cells, white blood cells, and platelets are all produced in the spongy tissue inside bones, mainly in the flat bones such as the sternum, ribs, and pelvis.
3. White blood cells play a vital role in the immune system. If there are too few or no white blood cells, the body's ability to fight off infections and diseases is severely compromised. A person would be more susceptible to bacterial, viral, and fungal infections, and even minor infections could become life - threatening.
4. Scab: Protects a wound and stops bleeding (B). Plasma: Holds the other parts of blood (A). Red blood cells: Carry oxygen to the cells (C).

Answer:

1. It prevents excessive blood loss, protects the wound, and helps in initial wound - healing and infection prevention.
2. In the bone marrow.
3. The body's ability to fight infections is severely compromised, and a person is more prone to life - threatening infections.
4. Scab - B, Plasma - A, Red blood cells - C