The residents can carpool from place to place, bike, or walk, which significantly reduces fumes. They can also grill less, and have fewer fires in their fireplaces.
Plantation of indoor and outdoor plants in the neighborhood can improve the air quality in no time. Plants remove carbon dioxide from the air and release oxygen thereby cleaning the air.
Wise of vehicles including the carpool can also reduce air pollution and improve its quality gradually. The burning of fuel in vehicles add pollutants to the air. Less number of vehicles used would prevent further deterioration of air quality.
This character trait is known as homoplasy. the definition of homoplasy that two or more species share a character, but they did not descend from a common ancestor.
This trait is known as convergent evolution, or convergence.
