Question

listed in the item bank are key terms and expressions, each of which is associated with one of the columns. order does not matter.
a system is commonly defined as a group of interacting units or elements that have a common purpose. systems can be made up of many parts and can be living or nonliving.
open systems closed systems
exchanges matter and heat very rigid boundaries people
a watch the carbon cycle exchanges heat but no matter

Explanation:

Open systems freely exchange both matter and energy (heat) with their surroundings, and have flexible boundaries. Closed systems only exchange energy (heat) but not matter, with rigid boundaries.

1. "exchanges matter and heat" is a core trait of open systems.
2. "people" are living open systems that take in matter (food/water) and exchange heat.
3. "the carbon cycle" is an open system as carbon (matter) and heat move between Earth's spheres.
4. "very rigid boundaries" prevent matter exchange, a closed system trait.
5. "a watch" is a closed mechanical system with fixed boundaries, no matter exchange.
6. "exchanges heat but no matter" is the defining trait of closed systems.

Answer:

Open Systems

• exchanges matter and heat
• people
• the carbon cycle

Closed Systems

• very rigid boundaries
• a watch
• exchanges heat but no matter