Which of the Eukarya kingdoms have photosynthetic organisms? O plants and eubacteria
O fungi and plants
O protists and plants
O archaebacteria and protists

the missing space is phylum

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.