Air pollution (outdoor and indoor)

products [‘kliːnɪŋ] [‘prɒdʌkts] 
Pollutant [pəˈluːtənt]

into the atmosphere in a way that makes it harmful

WHAT IS AIR POLLUTION?

and natural actions. Pollution from nature is not very often.

These sources are usually concentrated in big cities. The main

Outdoor air pollution:

use. Air indoors can be polluted by cleaning products, dust,

Indoor air pollution

problems such as asthma.
To reduce air pollution at home

 
6. Pollutant
a) capable of causing harm; injurious
f) Contamination of air by smoke and 
harmful gases
e) consisting of people
d)any thing or place from which 
something comes, arises; origin
c) an act or instance of making clean
b) certain chemicals or waste products, 
that renders the air, soil, water harmful 
f
e
a
d
c
b