NCERT Important Questions Class 9 Science biology Chapter 13
Important NCERT Extra Questions
Chapter 13 Why do We Fall ill
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
How has WHO defined health?
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“A state of complete physical, mental and social well-being and not merely the absence of disease or infirmity that enables one to lead a social and economically productive life”.