Exposure to higher dose of solar UV-B radiation to humans may cause_________
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Cataract
UV-B reaching the earth through a depleted ozone layer damages the eye and the skin; clouding of the eye lens, that is cataract, along with snow-blindness and skin cancer, is its classic effect.
The other three are metal-poisoning diseases: Itai-Itai from cadmium, Black-foot disease from arsenic in groundwater and Minamata disease from methyl mercury — none of them is caused by radiation.