Question

b) How these are useful for human body
(4)​

Answer 1

Answer:

In addition to keeping our cells healthy and clean, our blood also works for our immune system and contains antibodies and white blood cells that fight germs and diseases. Vital organs are the parts of our body that we need to stay alive. These include the heart, brain, lungs, kidneys, liver and pancreas.

Explanation:

Answer 2

Answer:

it Q hard for me so I can't explain the answer