1.how does the groin change the beach 2.how has the groin changed the beach in front of mr Sanchez’s house

3.Does Mr. Sanchez have a good reason to fear loss of his beach and home.

5.what would happen if the groin were removed

the actual answer was 160934

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.