Why are the levels of all the seas equal in the world?
Answers
The level of the all seas equal in the world which is calculated as per the height from the sea level.
In the seas in the world are connected to each other and also less the seal level in all over the world which is taken to roughly the same in a fine manner.
Answer:
There is a detailed description of the Water cycle here: Water cycle - Wikipedia
As the professor explains, the main variation occurs in where and how water is stored in the system. Perhaps you could ask the question ‘what force or forces would be required to cause sea levels to change?’
The mean sea level globally has being rising steadily for some decades now. Among the main reasons are melting ice and thermal expansion. These are manifestations of increased heat in the system, or Global Warming.