A way in which humans can interact with the environment in a positive way is to A all of these
B. feeding the birds
C. clean up the beaches
D. clean up the bay

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )

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