There are mountains and plains at the bottom of the oceans. One of the main landforms of the ocean floor is the system of mid-oceanic ridges. Stretching for 60 thousand km, which is almost one and a half times the length of the Earth’s equator, they have entwined our entire planet with a giant necklace. The mid-oceanic ridges got their name due to the fact that they occupy a central position at the bottom of the oceans. Only in the Pacific Ocean is the “mountain necklace” shifted to its eastern margin, forming the East Pacific Rise. Sometimes ridges rise above the water surface and form islands. Iceland is an example of such an island.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.