Discuss the causes and effects of global warming. What measures need to be taken to control global warming?

Explanation

Ozone layer depletion can be controlled by
(1) Phase down or ban the use of CFCs (CFC free refrigerants).
(2) Minimizing the use of chemicals such as halons and halocarbons.
(3) Creating awareness about ozone depleting agents. UV rays may penetrate deep into the skin and can lead to premature skin aging and wrinkling of skin, suppression of the immune system, skin cancer (melanoma) and chronic effects leading to eye damage. DNA damage can result from free radicals and reactive oxygen and photons can damage the DNA itself.