What is the definition of individual organisms

The definition of an individual organism is:

"one genome in one body".

Explanation: This definition is based on the physiological and genetic criteria but it would produce some problems if discussed in the colonial organisms.

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.