锦候: “Cattle are the No. 1 agricultural source of greenhouse gases worldwide. Each year, a single cow will belch about 220 pounds of methane.”said Mitloehner, a professor and air quality specialist ... (9-7 02:14)
锦候: in the Department of Animal Science of UC Davis. (9-7 02:14)
锦候: a 2019 study published in Animal Frontiers found livestock is responsible for 14.5 percent of the world’s greenhouses gases. (9-7 04:12)