As we all know, there are still many unsolved mysteries about the development of the earth, such as where does the salt in the sea come from? Will the sea become saltier?
Let's take a look at this interesting question.
According to the data, the reason why the sea water is salty is because of the salt contained in the seawater. If all the dissolved salts in seawater were extracted, the weight would reach 500 million tons. If this salt is spread on land, the height of the land can be increased by 153 meters. So, where does so much salt come from?
Some scientists believe that the water that appeared when the earth was first formed was freshwater. As the water washes away the mud and rocks, it carries soluble salts into the rivers, which return to the sea. As the water evaporates, the salt accumulates and the sea becomes salty. If reasoning is followed by this theory, then over time, the sea water will become more and more salty.
The composition of seawater and river water has been compared, and it has been found that the composition of seawater and river water is similar, but the content of various salts in seawater and river water is different. Since salt is collected from land to the ocean through the Earth's water cycle, there should not be such a big difference in the amount of salt in seawater and river water. As a result, doubts have arisen about the idea that the salt in the sea comes from fresh water.
There are also some scientists who take a compromise view, arguing that there are not only innate reasons for the saltiness of seawater, but also later factors. In other words, not only does salt from the land continue to flow into the seawater, but with the eruption of submarine volcanoes, the salt from the lava on the ocean floor also collects into the original ocean.
In addition, there are other theories about the cause of the formation of sea salt, but none of them are infallible, and it seems that this mystery will continue to haunt mankind.
If you are interested in the earth on which we live, you can read the book "Mystery of the Earth" in the "Mystery of the World" series, which will definitely inspire you.