Final answer:
The research question for Dietz-Uhler & Lanter in 2009 cannot be provided from the given information, however, the details pertain to a review of the environmental impacts of human diets by Bingli Clark Chai and others.
Step-by-step explanation:
The research question for the study conducted by Dietz-Uhler & Lanter in 2009 is not directly provided in the information available. However, the information presented relates to a different study, by Bingli Clark Chai and secondary authors, which systematically reviews the environmental impacts of human diets, focusing on a variety of studies and reviews conducted in the United States and Europe over periods ranging from seven days to 27 years.
This systematic review compares the design, intervention, duration, diets, quality assessment, and main outcomes of these studies and reviews, offering insights into the sustainability of human dietary patterns.