In a longitudinal wave, the vibration of the medium Group of answer choices

A. is in the same direction (parallel) to the direction of the wave (back and forth motion).

B. is perpendicular (at a right angle) to the direction of the wave.

C. occurs only in a gas or a liquid.

D. does not require a source of energy.

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