Biology 5090 · O Level · Effects of humans on ecosystems

Effects of humans on ecosystems — practice question

A farmer is cultivating wheat in a field. The farmer applies insecticides to eliminate insect pests and chemicals to remove weeds from the field. Which statements about this field are correct?

A1 and 2 only
B1 and 3 only
C2 and 3 only
D1, 2 and 3

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