Which of the following characteristics is common to organisms in kingdom eubacteria? a. live without oxygen b. live in less extreme environments than most archaebacteria c. live in the hottest and coldest places on earth d. are multicellular

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.