Why life may come to a standstill and the inconveniences humans can face if there are no energy resources available?

If there's no energy resources available, plants cannot make food and as a result they will die, followed by the animals, then us humans due to starvation. Another reason is that we cannot carry out our daily routine like showering as there are no electricity energy in the heater. We will not be able to use fans and air-cons too.

Lastly, if we don't have energy in our bodies, we cannot do almost everything as everything we do burns energy. It's very important to have energy as it is like everything to us. Remember to not waste them too. :) :)