Answer:
Energy
Explanation:
In the perspective of common people , almost all changes that we make need some sort of energy in order for it to happen. Even the simple ones.
(For example, When you want to turn on the lamp, you need to spend energy to push your finger down and press the switch. When you wants to change your bed covers, you need to spend energy to walk down to the cabinet , take out the bed covers, and spend another energy during the removal and set up of the bed cover.)
Energy can be expressed using or Newton* meter as units, mean that you do a certain amount of work(Newton) over a distance (meter) and The ability to conserve or energy like food will be expressed as Joule(J).
