DriParrondahepalma DriParrondahepalma

14-12-2016
Health

contestada

why does improving air quality have to be a worldwide effort?

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johnkellock johnkellock

16-12-2016

Because air flows throughout the planet, dust and pollution travel across oceans and continents, where pollutants land in sea waters, and on streets, and fall in rain water. Therefore nations must unite to combat the problem together.

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