Black lung disease is common among
Coal miners
Refinery workers
Farmers
Petrochemical industry workers
Virus - Infected cell secrete protein called .........
In the sigmoid curve of growth, the alphabets indicate the sequence of events. Choose the correct option where the alphabet specifies the event.
The main reason why antibiotics could not solve all the problems of bacteria mediated diseases is
Recently chikungunya and dengue cases were reported from various parts of the country. Choose the correct vector responsible for these diseases
$A$ - Acid in the stomach and saliva in the mouthare examples of physiological barrier.
$R$ - Tears from eyes is example of physicalbarrier.