Using energy as the factor, what case can be made for eating vegetarian?

A case that can be made for vegetarians is that there's more energy that's available to them.

Vegetarianism refers to the practice of abstaining from eating meat. A vegetarian diet typically contains grains, vegetables, fruits, etc.

It should be noted that as a vegetarian, there's more energy that's available to the person. This is because plant-based diets are more energy-efficient than livestock-based diets.

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Explanation:

One of the benefits of a vegetarian diet is a reduction in your impact on the environment. Animals store only a small fraction of the energy they extract from the food they eat, and the rest is wasted as heat.

links? do you have a link? i don't see anything?