Diffusion is a concept that explains how humans transfer ideas, features, or trends from one group and place to another. This includes agricultural practices.

In 1–2 sentences, describe some examples in which diffusion of agricultural practices has had a positive effect on humans or the environment.
In 1–2 sentences, describe some examples in which diffusion of agricultural practices has had a negative effect on humans or the environment.
In light of these benefits and risks, explain in 1–2 sentences how the diffusion of agricultural practices might be managed in the future to obtain the best results.