Question

roup
1.
fights diseases
2. Blood vessels are thin
that carry blood throughout our body
3. Our heart pumps
when we run and
when we all
4. Oxygen rich blood goes from lungs to the
LEAD SCHOOL​

Answer 1

Answer:

What is the question I am not able to understand it!!!! please try it again

Answer 2

Explanation:

sorry don't know the answer....

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