This affects our health in circumstances such as:
- Increase in the population that has allergies.

- Development of heart diseases.

- Increase in people suffering from respiratory diseases such as asthma or insufficiency.

- Increasingly alarming numbers of people affected by some type of cancer.

• Nitrogen oxides 
• Carbon monoxide 
• Volatile organic compounds 
• Sulfur oxides
• Particulate matter 
• Mercury..

these are formed from the oxidation of sulfuric acid and nitrogen dioxide.

-Mining extractions
-Use of pesticides in agricultural activities
-Excessive industrialization
-The increase of factories and mass consumption
-Burn of fuels

SOME CONSEQUENCES CAN BE:
- fires and deforestation
- contamination of water
- destruction of flora and fauna
SOME SOLUTIONS:
* do not use fossil fuels
* use renewable energies
* Decrease carbon dioxide emissions
* recycle more
* Walk or ride a bicycle
* enhance and protect natural spaces
* plant more trees
* Ventilate the house and purify the air
* Produce less smoke at home
* Use ecological cleaning products

Organizations that help !!
Thanks to organizations such as the ONU ,the world has been opening its eyes. Scientists show how dangerous and harmful this problem is.This is the case, for example, of the Smog Free Tower, a tower to absorb smog.