Which cell molecules will be used to make viral proteins

You can check answer here

https://cutt.ly/kzjInUL

the supermassive black hole is in the middle of the galaxy.

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.