Question

in which of the following ways has the green revolution been unfriendly to the environment?
soil conservation
crop rotation
use of pesticides
introduction of new varieties of crops

Explanation:

Soil conservation and crop rotation are environmental-friendly agricultural practices, while new crop varieties themselves do not harm the environment. The use of synthetic pesticides from the Green Revolution leads to soil/water contamination, harming ecosystems.

Answer:

use of pesticides