Answer:

Explanation:

The scientific concept or theory behind this is Energy Conservation, which states that energy can be transferred and transformed, but cannot be created nor destroyed. Thus, all three of these items can store energy, but in different ways.

Food stores energy in the form of chemical bonds (such as carbohydrates, proteins, and fats). Our bodies use this stored energy when we eat and digest food.

Petrol stores energy in the form of chemical energy, which can be released when petrol is burned. This energy can then be used to power an engine or generator.

A battery stores chemical energy in the form of electrical charges, which can be used to power electrical devices.

These examples can be found in our everyday lives. For example, when you eat, your body uses the energy stored in the food to fuel your biological activities. When you fill up your car with petrol, it uses the energy stored in the petrol to power the engine. When you plug up your phone, the battery uses the energy stored in it to power the device.