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the water cycle
it moves uphill and towards the surface of earth
Hydrologists study the water cycle. They research and monitor the movement, distribution, and quality of water on Earth, including how water changes state, moves through the atmosphere, and flows in various forms on the planet's surface.
it fluctuates
yea
It's called the Water Cycle (Hydrologic Cycle).
Water moves through biosphere. It travels through land, water and air.
Into the atmosphere. Then it is basically recycled again through the CO2 cycle.
Solid, liquid, or gas.
Into the atmosphere. Then it is basically recycled again through the CO2 cycle.
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Because the product life cycle is fixed at 20 years.