1 --> Jaws
2 --> Four limbs
4 --> Mammary & fur
5 --> Walking on two legs
The Mitocondria is the powerhouse of the cells in plants
Explanation:
A system can be either closed or open; A closed system is a system that is completely isolated from its environment. An open system is a system that has flows of information, energy, and/or matter between the system and its environment, and which adapts to the exchange.