Which statement best describes environmental risk from engineered crops?

Which statement best describes environmental risk from engineered crops?

• A. Engineered crops are always safe for ecosystems.
• B. They have no effect on pest species.
• C. They guarantee increased biodiversity.
• D. They may harm other organisms or ecosystems.

Answer: (D)

Engineered crops can introduce new traits that change how organisms interact in the environment, creating potential risks to other species and to ecosystem processes. That possibility of negative impacts is what makes the statement about potential harm the most accurate. For example, traits designed to control pests can affect non-target insects, and crops engineered for herbicide tolerance can lead to increased herbicide use, shifts in plant communities, and the evolution of resistant weeds. There’s also the concern that genes could move from crops into wild relatives, altering ecosystems in unpredictable ways. While these crops can bring benefits, the reality is that environmental risk exists and must be managed, not assumed away. The other options imply safety, no effect on pests, or guaranteed biodiversity, which isn’t supported by how these crops interact with real ecosystems.

Engineered crops can introduce new traits that change how organisms interact in the environment, creating potential risks to other species and to ecosystem processes. That possibility of negative impacts is what makes the statement about potential harm the most accurate. For example, traits designed to control pests can affect non-target insects, and crops engineered for herbicide tolerance can lead to increased herbicide use, shifts in plant communities, and the evolution of resistant weeds. There’s also the concern that genes could move from crops into wild relatives, altering ecosystems in unpredictable ways. While these crops can bring benefits, the reality is that environmental risk exists and must be managed, not assumed away. The other options imply safety, no effect on pests, or guaranteed biodiversity, which isn’t supported by how these crops interact with real ecosystems.