Answer:
The answer is B because its just your total distance so for your to get your displacement you would add the two distance together then that answer would be you displacement
Cell,tissue,organs,organ systems, organism
Carbon dioxide is returned to the atmosphere primarily by respiration of humans, (exhalation to be precise). The return of carbon dioxide to the atmosphere is also possible by the decay of plants and animals and combustion, which is the process of burning something.
