I INTRODUCTION
Earth (planet), one of nine planets in the solar system, the only planet known to harbor life, and the “home” of human beings. From space Earth resembles a big blue marble with swirling white clouds floating above blue oceans. About 71 percent of Earth’s surface is covered by water, which is essential to life. The rest is land, mostly in the form of continents that rise above the oceans.
Earth An oxygen-rich » Read more: EARTH, A PLANET
Earth science
Earth science is an all-embracing term for the sciences related to the study of the earth and of the universe around it, making it a wide scientific discipline covering all facets of how the earth works. It is a special case in planetary science as the earth is the only known life-bearing planet. Earth Science is also known as the Earth Sciences, Geoscience, and the Geosciences.
There are four major discipli » Read more: What Is Earth Science
