Question

Depletion of ozone layer causes:
(A)- blood cancer
(B)- lung cancer
(C)- skin cancer
(D)- breast cancer

Answer 1

Hint: With the release of various halogen gases and chlorofluorocarbons (CFCs) into the atmosphere, the reactive species come in contact with the ozone molecules and destroy them, leading to the thinning of the ozone layer which blocks the radiations from the sun to directly reach the earth surface.

Complete answer:
The ozone is found in the second major layer of the atmosphere, that is, the stratosphere in which the area with the highest concentration of the ozone forms the ozone layer. It plays an important role in shielding and absorption of the harmful ultraviolet radiations for the sun, from reaching the Earth’s surface.
But this ozone protective layer due to the release of harmful gases of chlorine or bromine into the atmosphere from industrial or human activities causes the thinning of the layer. This is known as depletion of the ozone layer.
Due to which, the radiations from the sun directly reach the earth surface and have various harmful effects like it inhibits photosynthesis in plants and reduces growth. Thus, reducing the crop production and its quality.
The radiation kills the planktons which is a major source of food for the marine species and absorbs the carbon-dioxide gas. Thus, disrupting the food chain, the climate, and the rate of global warming.
The humans are also greatly affected by the UV rays as it comes into contact with our skin, it results in various infection diseases and melanoma skin cancer, accelerates the aging of skin, damages the immune system, damages the eye and in extreme cases it leads to cataract.

Therefore, the depletion of the ozone layer causes option (C)- skin cancer, in humans among the various other diseases.

Note:
The thinning of the protective layer causes the rays to reach the earth surface and in contact with our skin. Thus, it is advised to wear sunscreens when going out in daytime.