Question

In coming years, skin-related disorders will be more common due to:
A. Pollutants in the air
B. Use of detergents
C. Water pollution
D. Depletion-of ozone layer

Answer 1

In coming years the skin related disorders will be more common i.e. the malignant skin cancer is more common due to the UV rays coming from the stratosphere.it damages the outermost layer of skin, further causes skin cancer.

Complete answer:
Effects of ozone depletion- Ultraviolet radiations are of three types UV-C (100-280 nm)UV-B (280-320 nm) and UV-A (320-390 nm). Shorter ultraviolet radiations (UV)are absorbed by the atmosphere. The longer ones are not much harmful. The intermediate or UV -B are harmful as well as capable of deep penetration. Thinning of the ozone layer increases the amount of UV-B radiations reaching the earth.
(1) Cornea absorbs UV-B radiation. It becomes inflamed. The disorder is called "snow blindness" cataract. It leads to nishing of eyesight, photo burning and later permanent damage to the cornea that results in actual cataract.
(2) UV-B radiations damage skin cells cause ageing of skin and skin cancer.
(3)There is an increased incidence of herpes and deficient functioning of the immune system.
(4) A large number of land animals would become blind.
(5) There will be a higher mortality of young ones of animals.
(6) Damage to nucleic acids will increase resulting in a higher number of mutations.
(7) High energy UV radiations break chemical bonds of proteins and other biomolecules.
(8) UV radiations inhibit photosynthesis by affecting photosynthetic machinery. The productivity of oceans, due to the effect on phytoplankton will decrease by 6-22%. The productivity of terrestrial systems will fall by 10-25%.
(9) Decreased photosynthetic activity will increase CO, the concentration of the atmosphere resulting in global warming.
(10) Both marine and terrestrial food chains will be disturbed.

Hence, the correct answer is option (D).

Note: skin-related disorders are common in all types of pollution but it is controlled by us but due to the more use of CFC in the refrigerator it causes the damage of ozone layer called as depletion-of ozone layer so when UV light comes through this causes severe skin cancer.