Question

closed and open systems ecosystems exchange matter and energy with surroundings, while the earth receives energy from sun as sunlight and emits heat back into space. these interactions are vital for understanding our planets interconnected natural processes. which is the best example of an open system on earth? a sealed jar lake room without windows

Explanation:

An open system exchanges matter and energy with its surroundings. A sealed jar is a closed - system as it doesn't exchange matter easily. A room without windows is also relatively closed in terms of matter exchange. A lake exchanges water (matter) through evaporation, precipitation, inflow and outflow of rivers, and also exchanges energy with the sun for processes like evaporation and heating of water. So a lake is an open system.

Answer:

lake