Some corn varieties can be genetically engineered to produce their own pesticide. How does this biotechnology negatively impact the environment?

It reduces pesticide use by farmers.
It can make food last longer in stores.
It can increase crop resistance to pests.
It can create pesticide resistance in pests.

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Answer:

The correct answer is: It can create pesticide resistance in pests.

Explanation:

Genetically engineered (GE) crops that produce their own pesticides, also known as Bt crops, have been widely adopted by farmers since their introduction in the 1990s. Bt crops are designed to express a protein from the bacterium Bacillus thuringiensis (Bt), which is toxic to certain insects. This allows farmers to reduce or eliminate the use of conventional insecticides, which can have negative environmental impacts.

However, there is growing concern that Bt crops may be contributing to the development of resistance in pests. When insects are exposed to Bt toxins over time, they can evolve to become resistant to the toxin. This can lead to a situation where the Bt crop is no longer effective in controlling the pest, and farmers may need to switch to other methods of pest control, such as conventional insecticides.

The development of resistance to Bt crops is a serious concern, as it could undermine the effectiveness of this important pest control technology. More research is needed to understand the factors that contribute to the development of resistance, and to develop strategies to prevent or delay its occurrence