What is a characteristic of persistent pesticides?

• A. They degrade rapidly in the environment
• B. They remain active for extended periods
• C. They are less effective against certain pests
• D. They are eco-friendly and non-toxic

Answer: (B)

Persistent pesticides are characterized by their ability to remain active and effective in the environment for extended periods. This means that once they are applied, they do not break down quickly, allowing them to continue controlling pests over a longer duration compared to non-persistent pesticides. This property can have significant implications for pest management and environmental health, as persistent pesticides may lead to prolonged exposure to non-target organisms and potential contamination of soil and water.

In contrast, the other options outline characteristics that do not apply to persistent pesticides. For example, rapid degradation is typical of non-persistent pesticides, while claims of being less effective or eco-friendly do not align with the nature of these long-lasting chemicals. Persistent pesticides, due to their extended activity, could potentially accumulate in the environment and cause adverse effects, so understanding their characteristics is crucial for proper application and safety considerations.