Of food or farming methods: produced without the use of chemical fertilizers, pesticides, or other artificial chemicals.
organic. Do you ever buy organic products? what about local and fair trade products? What are they? Why? Are you happy to pay more for such items?
What are sources of noise pollution?
Road traffic, airplanes, railroads, construction sites, industrial activitiy, in buildings, products, fireworks etc.
How can we improve air quality in cities?
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