When carbohydrate monomers are joined together, the process is identified as and when they are broken apart again it is called
a. hydrolytic bonding; degradation
b. hydrogen bonding; depletion
c. condensation synthesis; hydrolysis
d. polar synthesis; hydrolysis
e. condensation synthesis; anabolism

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.