"Which concept is best illustrated by this diagram?
(1)The life functions performed by single-celled organisms are different from the life functions performed by complex organisms.
(2)Single-celled organisms carry out life functions that are essential for survival.
(3)Since single-celled organisms lack organs, they can survive only in moist environments.
(4)Single-celled organisms contain one organelle that performs all the life functions."
(1)The life functions performed by single-celled organisms are different from the life functions performed by complex organisms.
(2)Single-celled organisms carry out life functions that are essential for survival.
(3)Since single-celled organisms lack organs, they can survive only in moist environments.
(4)Single-celled organisms contain one organelle that performs all the life functions."