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7.Human Health and Disease
normal
Sprinkling oil over ponds would control malaria because
A
Fishes die
B
Water gets polluted
C
Larvae are asphyxiated
D
Mosquitoes are repelled
Solution
(c) When kerosine, paraffin and petrolium oil is sprinkling over pond, then larva and pupa of mosquito die after some time due to difficulty of breathing.
Difficulty of breathing is known as asphyxia.
Standard 12
Biology
