Answer
A system is a group of parts that make up a complex, interconnected whole. Some examples include:
1. Power Systems
2. Ecological Systems
3. The Solar System
Work Step by Step
Answers can be easily found online and in the dictionary.
1. Power Systems = consists of substations, power plants, wires, receivers, etc.
2. Ecological Systems = consists of many different animals and other features in nature
3. The Solar Systems = consists of things like planets, constellations, the Sun, asteroids, comets, etc.