Question

WHAT IS AIR POLLUTION?
Air pollution is the effect caused by concentrations of solids, liquids or gases in the air that have a negative impact on the
surrounding environment and people. There are many such pollutants and they may occur naturally (from dust, wildfires, and
volcanoes) or from human activity, be visible or Invisible, emit an odor or be odorless. Various air pollutants can stay in the
atmosphere from minutes to years and, while often considered a local issue, may have a range that is local, national, regional, or
global
. Ale pollution is often understood as an urban issue and it is true that cities concentrate economic activity and demand for
energy services, and, so, tend to experience the most harmful concentrations of air pollution. The precise mix of pollutants and
the severity of the health impacts are different from Paris to Delhi, Los Angeles to Lagos, Belling to Mexico City, but all have alr
quality that reduces life expectancy. Air pollution does not stop at the city gate the sources are widespread, sometimes rural in
nature and, although some pollutants disperse only locally, others travel large distances in the atmosphere and have regional and
global impacts. Many of the world's poorest communities are heavily exposed to toxic fumes when cooking, or heating and lighting
their homes.
1. What is the text about?​

Answer 1

WHAT IS AIR POLLUTION?

Air pollution is the effect caused by concentrations of solids, liquids or gases in the air that have a negative impact on the surrounding environment and people.

(Tradução:  A poluição do ar é o efeito causado por concentrações de sólidos, líquidos ou gases no ar que têm um impacto negativo sobre o  ambiente circundante e pessoas.)  

WHAT IS THE TEXT ABOUT?

The text is about pollution, be it natural or by human activity.

(Tradução: O texto trata- se sobre poluição, seja ela natural ou pela atividade humana.)