What are the worst pollutants and who are the worst polluters?

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The most commont pollution is either water pollution or air pollution.

>> CORRECT^^ [common]

Water pollution and air pollution not only harm our environment but also our health.

>> Water pollution and air pollution are not only harmful to our environment but also to our health.
Waste water and sewage waste are the two biggest causes of water pollution.

>> Waste in the water and sewage waste are the two biggest cause of water pollution.

World population is increasing each year, which means that each year there is more waste compared to previous years.

>> Population is increasing each year, which means, each year it is also increasing compared from the previous years.

Despite the fact that we now live in the 21st century there is still more than billion people worldwide who lack access
to safe drinking water, and more than two billion people in the world live without proper sanitation systems.

>> Despite the fact that we are now living in the 21st century there are more than billion people worldwide who don\'t have safe water to drink and more that two billion people in the world live without proper sanitation system.

Air pollution doesn\'t only refer to outdoor but also indoor air pollution, in fact according to the recent estimates
indoor air pollution is responsible for more deaths compared to outdoor air pollution.

>> Air pollution is not only referring to outdoor pollution but also indoor pollution. In fact, according to the recent estimates, indoor air pollution is more responsible to more deaths compared to outdoor pollution.

The main sources of air pollution are traffic and industry.

>> The main sources of air pollution are smoke belching from cars and factories.

Air pollution coming from traffic is causing hundreds of thousands of deaths orldwide.

>> Air pollution coming from cars are causing hundreds of thousands of death worldwide.

We all need to fight against water and air pollution.

>> We all need to prevent water and air pollution.