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from the list below, select four types of agricultural research that could lead to more sustainable farming.

the improvement of nutritional quality
the storage of crops
economic resources
farming without funding
the building of tractor parts
the study of ancient tools
the use of pesticides
the production of crops
the marketing of crops

The improvement of nutritional quality, economic resources, the production of crops, and the marketing of crops.

The improvement of nutritional quality will help make better crops so that they turn out beautiful.

Economic resources helps make the crops so that you have a ton of crops.

The production of crops will help with more sustainable farming.

The marketing of crops will help you with getting money and to afford for making more crops next year.

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true is the final answer!