Question

Define ozone O3,deplition,cause,effect?

Answer 1

A layer in the earth's stratosphere at an altitude of about 10 km containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.
What is ozone depletion?
Ozone depletion, gradual thinning of Earth's ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. The thinning is most pronounced in the polar regions, especially over Antarctica.
Causes and effects
The primary cause of ozone depletion is the presence of chlorine-containing source gases (primarily CFCs and related halocarbons). In the presence of UV light, these gases releasing chlorine atoms, which then go on to catalyze ozone destruction. Depletion of the ozone layer has consequences on humans, animals and plants. This typically results from higher UV levels reaching us on earth. Research confirms that high levels of UV Rays cause non-melanoma skin cancer,

Answer 2

a colourless unstable toxic gas with a pungent odour and powerful oxidizing properties, formed from oxygen by electrical discharges or ultraviolet light. It differs from normal oxygen (O2) in having three atoms in its molecule (O3).

reduction in the concentration of ozone in the ozone layer is known as o3 depletion