Question 18 • W Geography_B_IC
Desert locusts are destructive because they consume large amounts of vegetation, including crops. A small swarm can eat as much vegetation in a day as an elephant, so choice B best explains their impact. The other choices incorrectly describe locusts as insect-eaters or claim they create dust storms; pesticide use is a response to infestations, not the main reason locusts devastate agriculture.
AI-written and checked against the verified answer.