E. coli causes diarrhea when food infected by this bacteria is consumed. however, e. coli also aids in the digestion of food.

choose the statement that justifies the role of e. coli.

a. e. coli function depends on quality of food

b. e. coli strains are harmful as well as beneficial

c. e. coli is capable of changing shape and fuction

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.