Increasing numbers of farmers are growing genetically engineered crops. A new report also says that the total land area where such crops are grown is increasing.

Genetic engineering is the technology of changing the genes of living things. Genes are parts of (36)_________ that control (37) ___________ and development. A changed gene directs a plant or other (38) ________ to do things it normally does not do. For example, a plant may be generally engineered to (39) ________ insects.

There is plenty of (40) _______ information about genetically engineered crops. Critics of genetic engineering say the technology is a threat to human health and the environme

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