The correct answer is World's Worst Air Quality. These cities has the worst air quality in the world, since these two cities suffer from air pollution due to the overuse of cars, the exhaust of cars expels a lot of smoke that forms within the air that causes bad quality and increases particulates in the air, which results to respiratory illnesses among the citizens of the said countries/states. <span />
Answer:
The reasons that cities boomed during the Middle Ages are more employment opportunities, increased trade, and growing interest in culture and art.
Answer:
nitrogen gas and oxygen gas.
Explanation:
78% of earths atmosphere is made up of nitrogen and 21% is made up of oxygen.
Answer:
4500 years old
Explanation:
Line up 50 to the graph on the y axis and it gives a x value of 4500
