1.what is the largest organ in a human body?
A. lungs. B. skin

C. heart. D. brain

2.What helps you to breathe.

A. lungs. B. heart

C. bone. D. brain

3.What helps you to bend your knees, elbow etc.?

A.brain. B.intestine

C. joints. D. eyes


4.What does the lungs and heart do?
A. it helps us to walk
B. it helps us to breathe
C. it helps us to sleep
D. it helps us to run

5.hoe many bones are their in the human body?

A. 1000. B. 200

C. 206. C. 300​