What they don't tell you: It's true that animal products tend to have much higher carbon footprint than food produced from plants.
他们没告诉你的第三件事:动物食品比植物食品有更高的碳足迹。
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The carbon dioxide is extracted with the help of solar and wind power, then "fed" to algae, which can be then used to make biofuel, fertiliser or animal feed.