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(B) The bacterium $Bacillus 	ext{ } thuringiensis$ (often referred to as $Bt$) is widely used as a biological control agent. It produces a specific i

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Bacillus thuringiensis

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(B) The bacterium $Bacillus 	ext{ } thuringiensis$ (often referred to as $Bt$) is widely used as a biological control agent. It produces a specific insecticidal protein (Cry protein) that is toxic to certain insect larvae. When these larvae ingest the bacterial spores, the toxin is activated in their gut, leading to their death. This bacterium is specifically used to protect crops like cotton $(Bt 	ext{ } cotton)$ and various fruit trees from harmful pests.

Which bacteria are used for the control of pests that are harmful to cotton and fruit trees?

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