Answer:
Physical aspects include those things, which have non-living physical existence. They also influence the total surrounding from different angles. These aspects include natural resources like air, water, soil etc. ... Thus, physical aspects of environment influence the population and health.
Explanation:
Thier hygiene and personal
Answer:
This is the difference between passive and active immunity
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Answer:
Bloodletting (or blood-letting) is the withdrawal of blood from a patient to prevent or cure illness and disease
Explanation:
