Hi dear
How are you! Hope you are fine by the grace of Allah Almighty and I'm fine too Alhamdulillah. The use of electricity has made our life easier. We cannot imagine to live without electricity. But without electricity we would adopt different traditional methods such as to communicate with one another we can write letters and for the preservation of food canning and drying can be helpful to safe food. Best of luck for contest. Wishing you success.
Regards @jannat12