GCE Agricultural Science 1989 Question 31

Why should a seed-producing farmer spray an insecticide on his crops only when the bees are not around?

1. A.The bees would sting him and he therefore avoids them
2. B.The farmer does not want to waste his chemicals
3. C.Bees are important for pollination of his crops
4. D.Bees produce honey for him in his farm
5. E.Bees are harmless insects.