Besides hard and soft, what other ways could be use to divide non living things

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

Differentiate renewable and nonrenewable resources

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast