Why do those working with livestock need to be particularly concerned about disease? a. animals do not process nutrition like plants do. b. exposure to animal waste can spread disease. c. animals have more diseases than humans. d. the diet of animals makes them vulnerable to diseases.

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive

some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.