Chest freezers were often kept in garages and other cold places and worked efficiently (and economically) by not having to fight central heating temperatures. I have read your column for years, and been impressed with the clear explanations you normally provide.
Amino acids are found in animal sources such as meats, milk, fish, and eggs. They are also found in plant sources such as soy, beans, legumes, nut butters, and some grains (such as wheat germ and quinoa). You do not need to eat animal products to get all the protein you need in your diet.
What you do need is the nutrients that make up meat, such as amino acids -- the building blocks of protein -- fats, iron and other vitamins and minerals. You can obtain all of the nutrients found in meat from non-animal sources, but in some cases nutrients are more easily obtained from meat. Eating too much meat can have negative health effects.