By going off, I am assuming you mean going bad. When water is underground, it is scrubbed by sand and isn't exposed to the air. When you expose it to the open air and anything else it can touch, you have contaminated it with bacteria.
The water is cleaned as it is filtered through rocks and soil.
A liquid mixture of water and a solid substance can be filtered to remove the other substance. Water will pass through the filer while the other substance will not. For instance, a water and sand mixture can be filtered to remove the sand.
porous rocks are rocks through which water etc. can seep or pass through.
It weathers rocks because the water enters through the cracks and therefore it expands the rocks
When blood is flowing through your kidneys and getting filtered a lot of things that go through the filter are salts, water, urea, glucose and some amino acids go through. Later on much of the water, salt and some glucose and amino acids get reabsorbed. So much of what your urine is composed of is urea, water, salt with extremely small amounts of glucose and amino acids.
The water is cleaned as it is filtered through rocks and soil.
The water is cleaned as it is filtered through rocks and soil.
Because they use springs from underground that are somehow filtered by the minerals from the rocks.
just water and salt
you can have the water evaporate and it will leave the salt behind
The way water and wind breakdown rocks is through erosion. This is the wearing away of the surface of the rock through continuous friction with its surface. The same amount of water (or wind) will wear away rocks of different hardness at different rates. Obviously, it would take wind a considerably longer period of time to wear down an inch of granite as it would water. On the order of millions of times.
All waste water travels to a water treatment site through underground pipes and is filtered clean before being released.
It carries water and minerals which are filtered out from the blood through glomerulus.
A liquid mixture of water and a solid substance can be filtered to remove the other substance. Water will pass through the filer while the other substance will not. For instance, a water and sand mixture can be filtered to remove the sand.
They get water from the sea and then it gets filtered through a big machine - that makes it fresh water that comes through our taps and stuff they get water in the rain then they filter it to make a fresh water
They get water from the sea and then it gets filtered through a big machine - that makes it fresh water that comes through our taps and stuff they get water in the rain then they filter it to make a fresh water
Through a medium to remove either odor, sediment, heavy metals etc