Earth, the only planet known to maintain life. A product of scientific phenomena and sheer chance. This blue speck in space holds the past, present, and future, of our very existence Approximately 4.5 billion years ago, the Earth formed from particles leftover from the creation of our sun. Gravity was histrionic these particles along to make pebbles which then shaped boulders, and eventually, the Earth. At its heart could be a solid inner core lined by a liquid outer core. Above this sits the mantle, made of flowing silicate rocks, and a rocky crust.
This rocky core is the third planetoid from the sun, circling the star from a mediocre interval of around 93 million miles. It’s near enough to the sun to be warm, unlike the cold gas giants.
All About Earth
But not thus shut that its surface is exposed to extreme heat and radiation as is that the case with Mercury. particularly liquid surface water and life. According to one theory, much of Earth’s water is as old as its rocks, both of which have formed during the Earth’s earliest days.
Although Earth is the only recognized place in the universe by liquid water on the outside, thereby begetting unique cascading effects on the planetoid. It hydrates the tract helping build nutrient-wealthy soil.
It collects and pools to form oceans and freshwater systems. And it cycles upward to feature wet to Earth’s protecting atmosphere. Also wherever there is fluid spring, there is life. Around 3.8 billion years ago in Earth’s seas, primitive life survived in the form of microbial bodies.
The ensuing billions
They and the ensuing billions of years gave rise to a range of more advanced life forms that survived in Earth’s seas, lands, and skies. As the only world known to harbor life, Earth’s biodiversity is expansive in nature. An estimated 1.5 million pieces of plants, animals, bacteria, fungi, and others have been cataloged with potentially millions, if not billions more yet to be discovered. Home to life and fueled by water, Earth houses a unique global ecosystem as curious and as grandas the astronomical events that made them possible.
Hadean eon represents a time before a reliable (fossil) record of life; It began with the creation of the planet and ended 4.0 billion years ago. The following Archaean and Proterozoic eons led to the beginning of life on Earth and its early development. The successor of the phanerozoic divided into three eras is Ion: Palaeolithic, arthropods, fishes and the first life on land; Mesozoic, which spread the rise, rule, and climatic extinction of non-avian dinosaurs; And Cenozoic, which saw the rise of mammals. Recognizable humans emerged almost 2 million years ago, a disappearing short period on the geological scale.
The earliest undisputed evidence of life on Earth dates back at least 3.5 billion years,    during the Ukrainian era, the geological crust first began to freeze after the molten Hudon Eon. Microbial mats are fossils such as stromatolites found in 3.48 billion years old sandstone discovered in Western Australia.  Other early physical evidence of biogenic material was found in graphite in 3.7 billion-year-old metasedimentary rocks discovered in southwestern Greenland  as well as 4.1 billion-year-old rocks in Western Australia Gone are the “remains of biological life”. ]  According to whole of the researchers, “If life begins relatively soon on Earth … it may be normal in the cosmos.” Photosynthetic organisms appeared 3.2 to 2.4 billion years ago and began improving the environment by oxygen. Life waited mostly short and definite until about 580 million years ago when multiple multicellular life began, evolved over time and finished in the Cambrian Explosion regarding 541 million years since. This immediate diversification of life forms built most of the major phyla known now and distributed the Proterozoic Eon of the Cambrian period of the Paleozoic era. It is estimated that 99 percent of the species that once lived on Earth, more than five billion,  have become extinct. [1 percent] [1 percent] Estimates on the number of Earth’s current species range from 10 million to 14 million,  of which approximately 1.2 million have been documented, but no more than 86 percent have been described.  However, it was recently claimed that 1 trillion species currently live on Earth, only one-thousandth of one percent is described. 
The Earth’s crust has changed continuously since its formation, as has life since its first appearance. Species continue to evolve, take new forms, divide into daughter species, or are extinct due to the ever-changing physical environment. The process of plate tectonics continues to shape the continents and oceans of the Earth and the life they create. Human activity is now a major force influencing global change, damaging the biosphere, the atmosphere along with the loss of the Earth’s surface, hydrosphere, and atmosphere, over-exploitation of oceans, production of greenhouse gases, degradation of the ozone layer, And the deterioration of general soil, air, and water quality.