What is the key advantage of genetically modified crops like Bt cotton?

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They are immune to all types of agricultural pests.

They require more chemical pesticides than traditional crops.

They can grow in any environmental condition without the need for water or sunlight.

They contain a gene from Bacillus thuringiensis to provide resistance to specific pests.

answer is C.

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Detailed Solution

The key applications of biotechnology in agriculture is the production of pest resistant plants, which could decrease the amount of pesticide used. Bt toxin is produced by a bacterium called Bacillus thuringiensis (Bt for short). Bt toxin gene has been cloned from the bacteria and been expressed in plants to provide resistance to insects without the need for insecticides; in effect created a bio-pesticid

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