Photochemical smog, lowered air quality, and increased greenhouse gas release is much more common in urban areas compared to rural areas. what explains the lowered air quality association with urban areas?
group of answer choices

urban areas have less water recharge zones, causing particulates and pollutants to evaporate into the air rather than infiltrate into the ground.

more fossil fuels are used for combustion in industry and cars, which are more concentrated in urban areas.

urban areas have higher levels of litter and solid waste from population dense neighborhoods.

rural areas have more green spaces that filter the air through plants.

More fossil fuels are used for combustion in industry and cars, which are more concentrated in urban areas.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.