Energy cannot be made or lost, according to the Law of Conservation of Energy.

This important idea means that energy can change from one form to another, but it never disappears.

Challenges:

• Energy loss: Sometimes, energy gets wasted because of friction, heat, or sound.
• Complicated changes: Changing energy from one type to another can also lead to wasting some energy.

Solutions:

• Using renewable sources: Focusing on energy from the sun, wind, or water can help reduce waste.
• Better technology: Putting money into smarter systems can help keep more energy usable.