Question

an open system is one that receives input from outside the system. for example, your body is an open system because it receives food and oxygen from outside the system (your body). what is another example of an open system?
a rock in a field
an earthworm taking in soil for nutrition

Explanation:

An open - system exchanges matter or energy with its surroundings. An earthworm taking in soil for nutrition is exchanging matter (soil) from outside itself, making it an open system. A rock in a field doesn't exchange matter or energy in a significant way like an open - system does.

Answer:

An earthworm taking in soil for nutrition