According to National Geographic, the Earth began with a cataclysmic event called the big bang. The BBC states that there have been five major cataclysmic events that caused mass extinctions in the recorded history of the Earth.Know More
About 450 million years ago, the Ordovician-Silurian event caused the death of approximately 85 percent of the life in the Earth's oceans. The BBC states that nearly all life on Earth lived in oceans during this time period. The second cataclysmic event occurred 359 million years ago during the Devonian period. The Devonian mass extinctions are thought to have occurred over the course of millions of years and included several mass extinction events. This event also mostly affected seas and sea life.
According to Wikipedia, the next mass extinction is thought to have killed approximately 96 percent of life on Earth during the Permian mass extinctions, which occurred over the course of millions of years. The Triassic-Jurassic extinctions affected marine life, birds and reptiles, and caused about 50 percent of land and sea animals to become extinct. The dinosaur extinctions occurred during the fifth cataclysmic event on record. During the Cretaceous-Tertiary event, the fifth cataclysm, the Earth was affected by many events that caused extinctions to occur. The final event that prompted mass dinosaur and sea life extinctions was a meteor that hit southern Mexico.Learn more in Prehistory
Prehistory generally refers to the time before writing was invented and practiced, while history typically refers to the time period after which written records still exist. However, there is no clear dividing line between the two periods.Full Answer >
Sachin Tendulkar is an Indian cricket player who is widely regarded to be the greatest player of the sport during modern times. He first played international cricket in 1989 and retired in 2013.Full Answer >
Tumbang Preso is a popular street game in the Philippines that has been played by children for decades. The game is also known as presohan and is commonly featured in Filipino TV series and movies.Full Answer >
Progressing from the oldest to the current, the four major eras of Earth's geological history are Precambrian, Paleozoic, Mesozoic and Cenozoic. The lengths of these eras are often measured by the term "mya," which represents "millions of years ago." The four major eras of the geological time scale, or GTS, are also subdivided into smaller units, such as the Earth's current time scale placement within the Holocene Epoch of the Quaternary Period of the Cenozoic Era.Full Answer >