1.   Environmental groups launched a campaign against the widespread production of genetically modified crops.

2.   For example, the pollen of modified crops had already been shown to be poisonous to monarch butterfly larvae.

3.   He argues that genetically modified crops are needed to avoid future famines.

4.   Most intense has been the reaction against genetically modified crops, known as GMOs, for genetically modified organism.

5.   The biotech corporations argue that genetically modified crops will put an end to food shortages in the developing world.

6.   Voters are animated by new fears about global warming, genetically modified crops and globalisation.

7.   In order to ward off a possible environmental disaster, the government has banned the growing of genetically modified crops.

8.   American farmers who have turned to modified crops seem to be getting yields no better than farmers who grow traditional varieties and are using similar quantities of pesticides.

9.   Among other more pressing concerns are whether genetically modified crops can create problematic weeds by passing their foreign genes on to wild relatives.

10.   An outcry against the genetically modified crops began in Europe earlier this year, and some of the concerns over safety have reached American shores.