Some forms of trade may be less damaging than others: export of renewable forest products should be less damaging than logging, and may discourage deforestation if it is carefully controlled and local people benefit (Buckley, 1993). To combat logging the Body Shop® store chain has tried to encourage environmentally benign forest product trade by minimising middleman profits. However, such products may have limited markets, which restricts what can be achieved. Falling commodity prices on the world market mean farmers get poor returns on crops, yet, committed to purchasing inputs, they are forced to expand the area farmed, or intensify production, or practise shifting cultivation and the extraction of other resources to supplement their farming activities, leading to environmental degradation. Going back to a pre-cashcrop economy cannot solve the problem. Through trade, countries can obtain materials and continue to expand production. It may also mean that production impacts (pollution due to manufacture and problems associated with consumption of goods) are felt over a wider area. International agreements on issues such as carbon emissions control can have a considerable effect on trade and industry (and possibly agriculture) (Maxwell and Reuveny, 2005).