Questions with the keyword 'pollution'

• There is a new type of coffee called coffee in a bag (I’m sure you’ve seen the ad). Why was this invented and what is by anon-279606 to Amy Comments: (No comments so far )
• If you discover a problem – e.g. a factory is polluting the river – how would you stop them and clean it again? by anon-278806 to Alistair Comments: (No comments so far )
• What causes the most pollution in rivers? and how can we help? by anon-276203 to Alistair Comments: (so far, 2s comments )