It water disappears
from
our
earth
Answers
Answer:
Every living thing on earth would die, since water is a large component of all known living cells, every plant, animal, fungus, etc would all dessicate completely, and crumble to dust.
With all water vapor gone from the atmosphere, the sky might change color, and become a reddish tint due to the high oxygen content. Without water vapor acting as a greenhouse gas, the surface temperature would drop substantially, maybe even to below freezing temperatures, but that wouldn't matter as much with nothing left to freeze.
The oceans would be laid bare, dwarfing the Grand Canyon so utterly as to make it a joke, but the ocean floor would be extremely bright, covered under several inches to feet of salt that snowed down to the floor when the water disappeared. What was known as the main island of Hawaii is now just the summit of Mauna Kea, the new tallest mountain on earth.
Even the what we once called the continents would look completely different. With all underground aquifers and reservoirs suddenly dry, massive sinkholes would open up all over the world, giving the continents a permanently pockmarked look.
As time went on, the world would take on a reddish tint, like Mars, as a thin layer of oxidized dust settled over everything, constantly distributed and deposited by the wind.
There would still be wind, as the atmosphere would be heated by sunlight, but no weather anymore. Just the occasional bolt of lightning or sheet lightning, when the atmosphere builds enough charge.
The new red face of the earth would only be marred by the eruption of volcanoes on the surface which would look from orbit, much more violent and frequent than it does now, without the oceans there to hide all the once underwater volcanoes where new sea floors are made. In what was the North Pacific, Tamu Massif would now be visible, a volcano formation on earth comparable in size to Olympus Mons on Mars.
Finally, the world would remain this way forever, no new life ever appearing again, unless a series of lucky comets carrying massive amounts of ice struck the earth and restored the Hydrosphere, incredibly unlikely now that the solar system is established and Earth's gravity well cleared its close vicinity long ago. Still, with several billion more years to go in the life of the solar system, the possibility of that happening is not zero. That's what would happen if all the water on Earth disappeared.
Without evaporation from lakes and oceans feeding the water cycle, it would stop raining. Without pools of water to drink from, people and most animals would dehydrate and die in a matter of days. Within a few weeks, plants would start withering in the ever-drier air.