Water is lost from the gas exchange surface of terrestrial organisms because gases must be exchanged with air. Terrestrial organisms have a high water potential, therefore when the gas exchange occurs water will be lost.
It has to do with volume vs surface area. All things lose heat through the surface. The bigger the surface, the more heat lost. An animal curled into a ball presents the least amount of surface area for its volume, which means it takes the least amount of energy to keep warm.
So they barley have to raise their heads out of the water to breath and see their prey.
Some fish do, but not exactly like humans. Bony saltwater fish lose water by osmosis. To replenish the lost water, the fish need to drink.
For want of a nail the show is lost, for what of a show the horse is lost, for want of a horse the rider is lost, is part of a famous quote. This quote was by Benjamin Franklin.
You need to stir the water because the heat energy coming off whatever you put into the calorimeter (whether it be food, metal, etc.) won't evenly distribute its heat throughout the water, and therefore the temperature reading won't be as accurate. If you stir it, the heat will be more evenly "mixed in" with the water, so to speak, and you will get a more accurate reading.
Of and as?
Evaporation.
Mars lost its water (or it all froze) fairly recently . . . about 1 million years ago.
The north star at night always points north, water follow a river water always leads to life as in people. But if your lost in a car driving hope for someone to come along and ask them for directions.
transpiration is the loss of water vapour from the leaves of the plant, therefore the bigger the surface area of the leaf, the more water vapour lost from the plant.
Water (just like any liquid) will always try to 'level out'. If some of it evaporates from one area, water from outside that area will flow towards it to equalize the amount lost through evaporation. This creates currents under the surface.
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They don't always. Maybe they aren't always thirsty. You know, there's plenty of water in the world for dogs to drink.
Elisha, a prophet in the Old Testament, made a lost ax head float on water by throwing a stick into the water, causing the ax head to float to the surface.
"Hydroplaning".
about 5% of radiation is lost before reaching Earth's surface
Uplift replaces rocks on Earth's surface lost the process of erosion.