Question

The pesticides need to be replaced because:

• A. Are very costly
• B. Cannot be stored for a long time
• C. Are mostly toxic and non-biodegradable
• D. Cause abnormalities in the target population

Answer 1

The correct option is C

Are mostly toxic and non-biodegradable

Pesticides are chemicals that are used to neutralize or kill harmful microorganisms and pests, such as rodents or insects, to protect crops.
Although useful, excessive use of these chemicals creates problems, since they can be poisonous to many plant and animal species and cause environmental pollution.