1.

Fill in the banks 1. Our body is made of unlimited small ………. 2. Lungs are protected in ……… cage. 3. Exchange of ………. takes place in wind pipe. 4. ……….. of fish absorbs oxygen dissolved in water. 5. Sweat conies out of body by ………… present in skin.

Answer»

1. Cells 

2. Rib 

3. Gases 

4. dome 

5. holes



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