Do you know that a lot of our fresh water comes from underground?
And many mysterious springs may be found here (1).
You see, some parts of the ground are permeable and some parts are not.
We have a lot of fresh water because of the impermeable part.
Permeable means that water can pass through it, impermeable means that it can't.
The impermeable ground layer will stop the water and collect it like a jar.
Because there is groundwater, we can dig a well.
Life is fluid, and when other resources decrease, we have it.
Where does this fresh water come from?
First, you should thank the sun.
Yes, the sun evaporates water from oceans, lakes and clouds.
Then fresh water is dropped back to the earth, allowing new life to be born.
But we should also realize that not all the water is used or evaporated by us.
Or run back to the nearest ocean or nearby lake.
But after millions of years, most of it was immersed in the ground.
This is good news for us and other kind people.
Because we can often find fresh water far away from streams,
When we do this, its wonders often make us happy.
Only from the permeability or impermeability of sediments and rocks,
We found the liquid of life, and we solved the secret.
2. Water cycle
The amount of water on the earth always remains the same,
Water classics are often attracted from their original places.
It all started with the evaporation of oceans and lakes,
This process creates a lot of fresh water for us.
Fortunately, salt is a solid and won't evaporate.
This important fact determines our fate to a great extent.
For animals, plants and humans, you can drink salty water.
If we do this, it will soon bring life to a screeching halt.
When this water evaporates, it will evaporate into clouds.
Sometimes there is thunder. As we all know, it is very loud.
These clouds contain a lot of water, but they float in the air.
It seems that you don't care if you put water on the sea and land.
Water exists in the form of small water droplets, and the clouds are very, very large.
So the average d