Final answer:
Earth is a closed system where water remains constant, with the water cycle vital for sustaining life.
Explanation:
Earth is a closed system, which means that while energy can enter and exit, no new matter is brought into the system. This concept is crucial for the conservation of resources on our planet, such as water.
Despite Earth having a vast amount of water, it remains constant within the system. The water cycle plays a vital role in redistributing water around the planet, ensuring its availability for life.
Human reliance on freshwater sources highlights the importance of maintaining the balance of water within Earth's closed system, emphasizing the necessity for sustainable water management practices.
Learn more about Earth's closed system and the water cycle here:
https://brainly.com/question/44070295
