September 21, 2021
Astronomy and Space Science
BlogadminpoolsAstronomy and Space Science Earth is the second solar planet from the Sun and therefore the only solar-system body known to harbor and support life. About 29.2 percent of the earth’s surface is water containing oceans and continents. The remaining portion is solid earth including mineral layers, deserts, plateaus, and mountains. The crust of the earth is divided into two main sections: the continental crust and ocean crust. The continental crust is composed of continents that are in extended continental drift and the ocean crust is the sea floor. A […]