2.
which factor has the greatest influence on the
variety of species that survive in different regions
of a marine habitat?
a.
depth of light penetration
b.
daily fluctuations in temperature
c. size of predators
d. average annual rainfall

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