Which statement describes the environmental persistence of chemicals?

Which statement describes the environmental persistence of chemicals?

• A. It remains in the environment for a long time
• B. It evaporates quickly
• C. It biodegrades rapidly
• D. It has no effect on health

Answer: (A)

Environmental persistence is about how long a chemical stays in the environment before it breaks down or is removed. The statement that describes persistence best is that it remains in the environment for a long time, because persistence means long-lasting presence. If a chemical evaporates quickly, it isn’t lingering in one place. If it biodegrades rapidly, it won’t persist either. And whether it affects health is a separate issue from how long it remains in the environment. The key idea is duration: lasting presence over time.

Environmental persistence is about how long a chemical stays in the environment before it breaks down or is removed. The statement that describes persistence best is that it remains in the environment for a long time, because persistence means long-lasting presence. If a chemical evaporates quickly, it isn’t lingering in one place. If it biodegrades rapidly, it won’t persist either. And whether it affects health is a separate issue from how long it remains in the environment. The key idea is duration: lasting presence over time.