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7.Human Health and Disease
normal
$A$ - Acid in the stomach and saliva in the mouthare examples of physiological barrier.
$R$ - Tears from eyes is example of physicalbarrier.
A
$A$ and $R$ both are correct.
B
$A$ and $R$ both are incorrect.
C
$A$ is incorrect, $R$ is correct.
D
$A$ is correct, $R$ is incorrect.
Solution
Solution is Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Standard 12
Biology
