ABSTRACT
As a general rule, animals need to consume other forms of life or their products in order to survive. For us, this would include animals and their products (i.e., milk, eggs) and/or plants and their products (fruits, vegetables, cereal grains). Even eating some forms of microorganisms such as yeast can help us survive. In this day and age, as food manufacturers spend millions of dollars developing new forms of food, we still must adhere to this basic rule. It would be impossible to nourish our bodies with foods completely manufactured in a food science laboratory unless those foods contained the same substances that we have obtained throughout our existence by eating other lifeforms on this planet.
