Final answer:
A system is a collection of parts that link together to achieve a common purpose, such as the organ systems in the human body.
Step-by-step explanation:
A system is a collection of parts that link together to achieve a common purpose. For instance, organ systems in the human body, such as digestive system and skeletal system work together to carry out specific functions. In the digestive system, the mouth, stomach, pancreas, gall bladder, and intestines all play vital roles in the digestion and absorption of nutrients. Similarly, in the skeletal system, the bones provide structure and protect vital organs.