Which can response to changes in their envoirnment.
A. Living Organism
B. Non-Living Organism
C. Both a and b
D. None of them
Each day human body breathe in ___ litres of air.
A. 5,000 to 10,000
B. 10,000 to 15,000
C. 15,000 to 20,000
D. 20,000 to 25,000