Happy Earth Day Happy Spring Fling ! Where the Goodwill Goes
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One Earth Filter Being Design
Earth Astronomical symbol of EarthThe Blue Marble, the first full-view photograph of the planet, was captured by astronauts en route to the Moon in 72
Earth is the third planet from the Sun and the only astronomical item known to harbor life. Based on radiometric dating and some other sources of evidence, Planet formed over 4. 5 billion years ago. Earth's gravity interacts with other items in space, especially the Sun and the Celestial satellite, Earth's only natural satellite. Earth revolves around sunlight in 365. 26 days, a period known as an Earth year. Throughout this time, Earth moves about its axis about 366. 26 times.
Globe's axis of rotation is tilted with respect to its orbital plane, producing seasons on Earth. The gravitational interaction between Earth and the Moon causes sea tides, stabilizes Earth's positioning on its axis, and progressively slows its rotation. Earth is the densest planet in the Solar System and the largest of the four terrestrial planets.
Earth's lithosphere is divided into several inflexible tectonic plates that move across the surface over periods of many hundreds of thousands of years. About 71% of Earth's surface is covered with water, mainly by oceans. The remaining 29% is land including areas and islands that collectively have many lakes, rivers and other sources of water that contribute to the hydrosphere. Nearly all Earth's polar regions are covered in ice, like the Antarctic ice sheet and the sea ice of the Arctic ice pack. Globe's interior remains active with a solid iron inner core, a liquid external core that generates the Earth's magnetic field, and a convecting mantle that drives plate tectonics.
Inside the first billion years of Earth's history, life appeared in the oceans and commenced to affect the Earth's atmosphere and surface, leading to the proliferation of aerobic and anaerobic organisms. Some geological evidence indicates that life could have arisen as much as 4. 1 billion dollars years ago. Since then, the combination of Globe's distance from the Sunshine, physical properties, and geological history have allowed life to evolve and flourish. In the great the Earth, biodiversity has gone through long periods of expansion, occasionally punctuated by mass extinction events. More than 99% of all species that ever lived on World are extinct. Estimates of the number of varieties in the world today vary broadly; most species have not been described. Over seven. 6 billion humans live on Earth and rely on its biosphere and natural resources for their success.[40] Humans have developed diverse societies and ethnicities; politically, the world has about 200 sovereign says.
The current English word Earth developed from a wide variety of Middle English forms, which derived from a classic English noun most often spelled eorðe. That has cognates in each Germanic language, and their proto-Germanic root has been reconstructed as *erþō. In its earliest appearances, eorðe was already being utilized to convert the many senses of Latin terra and Greek γῆ (gē): the floor, their soil, dry land, the human world, the surface of the world (including the sea), and the world itself. As with Terra and Gaia, Earth was a personified goddess in Germanic paganism: the Angles were listed by Tacitus as among the devotees of Nerthus, and later Norse mythology included Jörð, a giantess often given as the mom of Thor.
Originally, earth was written in lowercase, and from early Middle English, its definite sense as "the globe" was expressed as the earth. By Early Modern The english language, many nouns were made a fortune, and the earth became (and often remained) the Earth, particularly if referenced alongside with other heavenly bodies. More recently, the name is sometimes simply given as Earth, by analogy with the names of some other planets. House styles now vary: Oxford spelling identifies the lowercase form as the utmost common, with the made a fortune form an acceptable alternative. Another convention capitalizes "Earth" when appearing as a name (e. g. "Earth's atmosphere") but writes it in lowercase when preceded by the (e. g. "the atmosphere of the earth"). It almost always appears in lowercase in colloquial expressions such as "what on earth are you doing? ".