1. Compare and contrast renewable and nonrenewable energy sources. Give two examples of each. 2. Look up what kind(s) of renewable energy your state uses. Explain why your state is an optimal location for the form of energy. please help me

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.