The conversion from vegetable material to animal muscle is only a 10% conversion efficiency, in other words: for one pound of steak the cow consume roughly 10 pounds of grass.Also, there is a recommendation on the World Health Organization website about avoiding consumption of red meat and processed meat:
The latest IARC review does not ask people to stop eating processed meats but indicates that reducing consumption of these products can reduce the risk of colorectal cancer.Unfortunately, Climate Change sneaked into our world. Please try to act responsibly.