3. Acid rain occurs over the northeastern United States largely because of the production of
A. ozone in the atmosphere.
B. sulfur oxide from burning coal.
C. carbon dioxide from plants.
D. carbon monoxide from automobile exhaust.

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.

very

i do believe the correct answer would be the third one. location c, because earth is tilted away from the sun at this time

hope this

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