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Up: Earth and other Planets
Previous: Rock Cycle
As was just seen, the Earth's cycles are not independent: for example, clouds
arising from the water cycle affect the atmospheric cycle, and sedimentary
rocks arise from actions of the water cycle. This fact, together with the
closed nature of the Earth, makes it apparent that one cannot make
changes in one part of the system without affecting the system
as a whole. Unfortunately, in recent years it has become apparent
that human technology has introduced some major changes
on a global scale that are upsetting the Earth's fragile balance.
We discuss three such changes.