When doing a geographical analysis of population, it is important to only look at one scale

so whats the answer

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.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?