Agricultural Problem

Hello!
I read this article.
I think the problem which harmful insects and pests caused great damage to agriculture is difficult to solve.
In Japan, there is the agriculture with ducks.
It is the way to lose pests.
The ducks eat pest, many farmers don’t have to use agricultural chemicals.
I think there are many ways not to use agricultural chemicals.
The problem which the global warming turns for the worse is not easy for us to solve.
But I want to do my best to improve the global warming.