Diffrence between:
respiration in human beings and respiration in fishes

 Gaseous exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of of carbon dioxide from the bloodstream to the lungs. Humans breathe through their mouth or nose, whereas fish breathe through gills.

c. movement because i took the test and it lets me review my answers

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.