Question

How has the mix of energy sources changed in the last 50 years in production and consumption?

Answer 1

As new energy sources have been developed, the energy consumption in the history has changed significantly.

There were some new forms of energy developed, such as fossil fuels like petroleum, natural gas, and coal which provides energy for 87% of US.

Answer 2

Answer:

As new energy sources have been developed, the energy consumption in the history has changed significantly.

Explanation:

its right