How might agricultural activities contribute to the greenhouse effect and global warming?

This is a Synthetic Argument Essay. The main question is “how might agricultural activities contribute to the greenhouse effect and global warming?” The thesis for this essay should answer that question.
The two sources that are required below:
https://www.postregister.com/opinion/guest_column/there-is-no-scientific-consensus-on-climate-change/article_97c04919-6519-5134-ad65-d25efab2b11a.html
https://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-climate-change-k4.html
Assignment Objectives are provided in the attached files.