The first law of thermodynamics states that energy can't be created or destroyed. if people can't create energy, where do we get energy to do the work

By transforming energy from one type to another.

Explanation:

Energy is not destroyed, it is conserved. During a thermodynamic process, it is transformed from one type to another. The first law expresses a system energy balance. Energy flows in a system (work and heat) are related to changes in system Energy. Thus the first law of thermodynamics says: "The sum of the heat exchanged by a system and the work done by or in a system is equal to the variation of the internal energy of that system."

i think the miocene epoch spans the time from 23 million to 12 million years ago.

condensation. good luck!