Explain how plants contribute to Earth’s atmosphere changes over a 24 hour period. Describe the evidence scientists have for this and how it was obtained. Use the terms carbon reservoir and carbon fluxes in your response.

it helps nature

it provides us with oxygen

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.