inland waters are the part of earth that is covered with water.
inland waters are the part of earth that is covered with water.
which part of earth is covered with water?
inland waters
earth's lithosphere is divided into several rigid tectonic plates that migrate across the surface over many millions of years. about 71% of earth's surface is covered with water, mostly by oceans. the remaining 29% is land consisting of continents and islands that together contain many lakes, rivers and other sources of water that contribute to the hydrosphere. the majority of earth's polar regions are covered in ice, including the antarctic ice sheet and the sea ice of the arctic ice pack. earth's interior remains active with a solid iron inner core, a liquid outer core that generates the earth's magnetic field and a convecting mantle that drives plate tectonics.
earth
water is a basic necessity of life. since 2/3 of the earth is covered by water, the earth is also called the blue planet and the watery planet. hydrosphere plays an important role in the existence of the atmosphere in its present form. oceans are important in this regard. when the earth was formed it had only a very thin atmosphere rich in hydrogen and helium similar to the present atmosphere of mercury. later the gases hydrogen and helium were expelled from the atmosphere. the gases and water vapor released as the earth cooled became its present atmosphere. other gases and water vapor released by volcanoes also entered the atmosphere. as the earth cooled the water vapor in the atmosphere condensed and fell as rain. the atmosphere cooled further as atmospheric carbon dioxide dissolved in to rain water. in turn this further caused the water vapor to condense and fall as rain. this rain water filled the depressions on the earth's surface and formed the oceans. it is estimated that this occurred about 4000 million years ago. the first life forms began in the oceans. these organisms did not breathe oxygen. later, when cyanobacteria evolved, the process of conversion of carbon dioxide into food and oxygen began. as a result, earth's atmosphere has a distinctly different composition from that of other planets and allowed for life to evolve on earth.
hydrosphere