All of the following are beneficial to human, except:
Correct answer: C. Locust
- A. Honey bee
- B. Silk worm
- C. Locust
- D. Insects for pollination
Explanation
Among the insects listed, locusts are not beneficial to humans. Locusts are notorious for forming large swarms that can devastate crops and vegetation. When they appear in massive numbers, they consume almost all the green plants in their path, causing severe economic losses and threatening food security. Therefore, they are considered harmful rather than beneficial.
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