Ozone depletion occurs commonly due to?
Correct answer B. Chlorofluorocarbons
Tip: press A, B, C or D to answer, and N for the next question.
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See allDeoxygenated blood first enters in ____ part in fishes?
Correct answer A. Sinus venosus
According to cohesion-tension theory, tension is created by?
Correct answer B. Transpiration
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Cuticular transpiration is ____ of total transpiration?
Correct answer C. 5-7%
An infectious disorder of respiratory system is?
Correct answer C. Tuberculosis
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