Question

15. How do cows contribute to global warming?
O A. They both produce and use up greenhouse gases.
O B. They have enteric fermentation and release methane.
C. They purify the air by breathing in greenhouse gases.
O D. They have enteric fermentation and the microbes in their guts break down
greenhouse gases.

Answer 1

I believe it’s B. They have enteric fermentation and release methane. enteric fermentation takes place in the rumen. That’s when bacteria break down complex carbohydrates into simple sugars. The end products of enteric fermentation by bacteria include volatile fatty acids (VFAs) as well as gases, such as carbon dioxide and methane. What cows eat has a big effect on how much methane they produce.