In order to maintain life, organisms must produce, modify, transport, and exchange materials. what is this process called?

homeostasis

is a noun

the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.