Final answer:
The correct spelling is 'unprecedented' and sustainable farming practices can benefit farmers in Puerto Rico.
Explanation:
The correct spelling of the underlined word in the research question is unprecedented.
Examples of sustainable farming practices that can help farmers in Puerto Rico include using crop rotation, organic fertilizers, and water conservation techniques.
The implementation of long-term treatment for ecological and soil health through sustainable growing methods requires a shift towards environmentally friendly agricultural techniques.
Learn more about spelling and sustainable farming practices here:
https://brainly.com/question/43703079
