Give an example of a system that has energy.

Aerobic Energy System

Explanation:

Digestive system. It contains chemical energy. The digestive system breaks down food. Food contains chemical energy. To break down the food, the digestive system contains enzymes. Enzymes have kinetic energy to move and break down the food. They are biological catalysts. They transfer to the thermal energy store since in order to break down food at the fastest rate, they need to be at an optimum temperature.

I'm not sure if it's correct, but I'll provide some energy stores to give you inspiration:

Kinetic energy

Chemical energy

Nuclear energy

Gravitational potential energy

Elastic potential energy

Thermal energy

58 km per hour : d

a corroding iron, if that's one of your choices