Beyond Meat Burgers

[bobh]

Yes, animals we eat get their protein from plants. Good answer.

Methinks someone is being facetious.
The point is that every stage in the food chain is less efficient than the next.
A single plant provides very little energy.
Plant-eaters need to eat a LOT of plants, and much of the plant cannot be broken down easily - hence cows having multiple stomachs and farting a lot, rabbits creating rabbit pellets, etc,
Eating meat is MUCH more efficient.