What is the lower region of the atmosphere that extends up to $10$ to $15 \ km$ from sea level called?
- ATroposphere
- BStratosphere
- CSmog
- DNone of these
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$(1)$ The types of smog are ..... and ..... .
$(2)$ Ozone in the air reacts with hydrocarbons to form ...... and ...... .
$(3)$ Harmful ultraviolet rays from the sun cause a type of skin cancer known as ...... .
$(4)$ Chlorofluorocarbon compounds are also called .......... .
$(1)$ The types of smog are ..... and ..... .
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The ozone layer exists up to $20 \ km$ above the Earth. Which of the following statements is true regarding the ozone layer and ozone?
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View SolutionThe chlorine free radical reacts with ozone to form a ..... free radical.
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