Why is energy efficiency important to society’s need to be efficient with energy usage?

To save the unnecessary bills and carbon emissions.

Explanation:

Energy efficiency is important to society in the following ways:

1. It saves the unnecessary bills as buildings who are using energy efficiently have less demands.

2. Saving energy for the future generations as we know low demand would save the sources.

3. Energy efficiency is also important to society in environmental ways at efficient energy means low carbon emissions.

i need the answer to this too but idk it ; -;

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.