For example, if birds feed on seeds and a certain variety of insect, without the seeds, the birds may disappear, and the insects would then overpopulate the area.

In addition, the cost of GM crops is initially high to the farmer. These seeds cost much more to develop and test, and so, they are much more costly to the farmer. They might benefit Third World agriculture in many ways, but few Third World farmers could possibly afford the increased cost of these seeds, and so, they would not be available to a majority of the people that need them the most. Cost is an important factor in the continued growth of GM crops, and so, manufacturers must eventually address the cost of these seeds, and reduce the cost so that more people can afford to plant them.

While no study has found GM food to be harmful to humans, opponents...
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