Cellular respiration refers to:
a. breathing.
b. the diffusion of oxygen into the cells.
c. the transfer of O2 and CO2 across a cell membrane
d. the production of ATP from energy rich compounds

Suppose you use three different scale to weigh a bag of organges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of organges is 2.153 lb. which of the following best decribes these results?