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Air pollution is the introduction of any substance that, due to its concentration, can become harmful to health and the environment. They cause problems such as global warming and acid rain. ______________________________________________________________ Canal Futura content in full is on Futura Play, access it here: https://goo.gl/Quh7m5 Find out all about Canal Futura: https://goo.gl/qauKIZ Follow us on Twitter: /canalfutura Like us on Facebook: www.facebook.com/canalfuturaoficial ========================================== Watch on your TV: SKY – Channel 434 (HD) or Channel 34 NET and CLARO TV – Channel 534 (HD) or 34 VIVO – Channel 68 (HD) (and also on fiber optics on channel 24) OI TV – Channel 35