The miracle would be to read the article which states the biodiversity damage is 14 times higher per calorie than plant-sourced foods. Which means you could reduce the 40% to 2-3% if you would replace it totally.
replyAnd per protein gram? Taking into account bio equivalence and bioavailability between different kinds of protein source.
replyVegetarian options are easier, cheaper and better to produce per gram of protein. Especially if you want to live in an society and not on the steppe.
replyYou think cows are the only animals that require food production from farms?
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