So the ocean is full of sea creatures that are constantly drinking the water and peeing it back out a shrine, so over time wouldn’t the entire ocean become less and less H2O and more fish urine (and blood from predation) until it’s just all fish pee? What piece of the puzzle am I missing?
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The water cycle filters water—the nitrogen cycle turns waste into fertilizer. The fertilized plants purify the water. And so on and so forth.
All the water on the planet is the same water that has always been here. You take a shower in dinosaur pee. But it’s been filtered and purified through natural processes.
That’s just one reason we have to protect the environment.
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