A line graph shows? A. changes in the dependent variable only
B. changes in the dependent variable only
C. how the dependent variable changes in response to the dependent variable
D. how the dependent variable changes on its own

do yall know the answer?

energy and particles

the endomembrane system i think

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.