However, plant protection products have a number of negative effects on the environment. (sciencedaily.com)
Raising gasoline taxes «would be the most direct and least invasive policy to address environmental concerns» and have a positive effect on the environment by lowering carbon dioxide emissions. (treehugger.com)
The production and use of paper has a number of adverse effects on the environment which are known collectively as paper pollution. (goodereader.com)