Learn German: Wir helfen der Landwirtschaft dadurch, dass wir das Klima schonen. - We help agriculture by protecting the climate.

In English, we usually say 'by doing something' to explain how a goal is achieved. German doesn't use an '-ing' word this way. Instead, it uses dadurch (through that) in the main clause, followed by a dass (that) clause. Literally, the sentence says: 'We help agriculture through that, that we protect the climate.' Because dass starts a subordinate clause, the conjugated verb schonen must go to the very end.

Why is it der Landwirtschaft and not die Landwirtschaft?

The verb helfen (to help) always requires its object to be in the dative case. Landwirtschaft (agriculture) is a feminine noun, so the feminine article die changes to the dative form der.

Could I use indem instead of dadurch, dass here?

Yes! indem is another very common way to express 'by doing'. You could say: Wir helfen der Landwirtschaft, indem wir das Klima schonen. The version with dadurch, dass just puts a slightly stronger emphasis on the method, literally meaning 'through the fact that we protect the climate'.

What is the difference between schonen and schützen?