Question

Desert locusts are devastating to agriculture because __________.
A.
they eat insects that play important roles in maintaining crop health
B.
small swarms can eat the same amount of vegetation in one day as an elephant
C.
they require massive pesticide use that also harms or destroys crops
D.
they create dust storms that blanket crops under desert sands

Answer 1

B.

Desert locusts are swarming plant-eating insects that can consume huge quantities of vegetation in a very short time, destroying crops and pasture. The other choices are incorrect: they eat plants (not beneficial insects), pesticides aren't the primary reason crops are devastated, and locusts don't create dust storms.