According to the Endosymbotic Theory, infoldings in the cell membrane

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.

im not intirely sure but i think the anwser is d relative humidity

this would be called the responsiveness

the correct answer was location c, because earth is tilted away from the sun at this time