Question

Which of the following human activities would be expected to be the biggest contributor to air pollution?

Answer 1

A. Driving

Cars are a big source of air pollution. The smoke out of car mufflers are the main source of the pollution. This is why many car companies are starting to make more electrical cars because they release less exhaust fumes.

Answer 2

The correct answer is (a) driving.

The pressence of undesirable substances in air is called as air pollution. There are many human activities that contribute to air pollution. The biggest contributor is driving. The pollutants that comes out of the car are carbon dioxide, carbon monoxide. They also release hydrocarbon and nitrogen oxides which when combines in sunlight becomes ozone. Air pollutants emitted by cars and other automobiles increases the level of harmful gases which to severe health problems such as heart disease, asthma, irritation in eyes.