> Each kilogram of fish sticks produces about 1.3 kilograms of carbon dioxide, which “rivals the climate impact of tofu,” she says. Beef, by comparison, produces over 100 times that amount of carbon dioxide per kilogram. These estimates vary a lot from one source to another, but even then 130 kgCO2/kg is an unusually high estimate for beef. Common range, I think, is from 20 to 60. For example this estimate is 26 [1]…
This also depends on what you count as carbon dioxide production. For example, cattle produce methane through gut fermentation, which is a strong greenhouse gas. However, it contributes to warming only to the extent the cattle stocks are growing. If cattle numbers are stable for some amount of time, than the methane produced by them does not contribute to new warming, as it forms closed cycle: methane decomposes to C…
https://www.oxfordmartin.ox.ac.uk/news/2018-news-Climate-Pol...