CP33 buffers around the perimeter of a crop field must be at least:

Vegetarians claim they are better consumers of food because they eat from the first trophic level (plants) instead of the second trophic level (animals that eat plants). However, because the American vegetarian diet is heavy in milk products and eggs, the difference is very small. Why so?

The crux of the second law of thermodynamics is:

With regard to the pie chart, (not the table) the single largest consumer of energy in modern farming today is:

Which of the following energy sources is poised to increase greatly in the future?

Which of the acronyms refers to the part of the USDA that funds sustainable agriculture?

The prequel to the statement “it was loaned to you by your children” is:

Other than greed, the cause of most issues with sustainability, famine, water, land, resources and climate change is:

All of the following provide chemoreceptor input to the respiratory centers of the medulla oblongata, except the

The effects of the conversion to no-till or minimum tillage are: