After reading the paragraphs below, answer the questions that follow.
Introduced species are a problem all over the world, and there are many examples in the United States. Several years ago, a fisherman caught a northern snakehead fish in a pond in Crofton, Maryland (a suburb of Washington, DC) . Snakeheads are a favorite food of immigrants from China, and live fish can frequently be found in Asian markets. It was suspected that the fish in the Crofton pond were purchased locally and then intentionally released.
Snakeheads are top predators, and 90% of the northern snakeheads' diet consists of other fishes. The northern snakehead can breathe out of water and travel short distances (about 100 feet) across land. They also breed rapidly. Females can lay more than 100,000 eggs per year. Juveniles have also been identified in the Potomac River and other rivers in Pennsylvania.
-Based on the characteristics of the snakehead described, which of the following is most likely to be a productive strategy to reduce the spread of this species?
A) extending the fishing season for prey fishes
B) introducing a natural predator to feed on juvenile snakeheads
C) capturing breeding snakeheads and sterilizing them so that they cannot breed any longer
D) introducing algae and photosynthetic bacteria to reduce nutrient levels in the water
Correct Answer:
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