Answer:
It is more extreme and rigid
Explanation:
The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.
Productivity is an economic measure of the amount of output (revenue, sales, profit) resulting from a measure of input (land, labor, capital).
It is a measure of the amount of output produced by a given amount of inputs in a specific period of time.
They stop the Germans advance in Stalingrad
