A gas commonly found in smog is ozone. Correct answer: A
Smog generally occurs in the lower part of the atmosphere is composed mainly of tropospheric ozone (O3), primary particulate matter such as pollen and dust; and secondary particulate matter such as sulphur oxides, volatile organic compounds, nitrogen oxides (NOx) and ammonia gas.
Tooth is a tiny bonelike structure located on our jaw which is used for biting of foods. It is also helpful in giving a well-sounded speech. While tooth morphology is an anatomic topography of the <span>teeth.</span>
