Question

a farmer needs to control pests in order to produce healthy food crops. which method of pest control would most likely have the smallest impact on the environment?
a. spraying the crops with liquid pesticide
b. using beneficial insects that eat the pest insects
c. having the crops dusted with powdered pesticide
d. vacuuming the pests up using a gas - powered machine

Explanation:

• Option A: Spraying liquid pesticide can contaminate soil, water, and harm non - pest organisms.
• Option B: Using beneficial insects (biological control) is a natural method. It has a targeted approach and does not introduce harmful chemicals into the environment.
• Option C: Dusting with powdered pesticide can cause air pollution and has similar negative environmental impacts as liquid pesticides.
• Option D: A gas - powered machine for vacuuming pests may consume fossil fuels (gas) and cause noise pollution.

Answer:

B. using beneficial insects that eat the pest insects