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God resting after creation – Christ depicted as the creator of the world prior to his incarnation as Jesus, [1] Byzantine mosaic in Monreale, Sicily.. Pre-existence, premortal existence, beforelife, or life before birth, is the belief that each individual human soul existed before mortal conception, and at some point before birth enters or is placed into the body.
At long irregular intervals, Earth's biosphere suffers a catastrophic die-off, a mass extinction, [9] often comprising an accumulation of smaller extinction events over a relatively brief period. [10] The first known mass extinction was the Great Oxidation Event 2.4 billion years ago, which killed most of the planet's obligate anaerobes.
The first eon in Earth's history, the Hadean, begins with Earth's formation and is followed by the Archean eon at 3.8 Ga. [2]: 145 The oldest rocks found on Earth date to about 4.0 Ga, and the oldest detrital zircon crystals in rocks to about 4.4 Ga, [34] [35] [36] soon after the formation of Earth's crust and Earth itself.
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...
Life expectancy for U.S.-born children is now 77.5 years, up from 76.5 in 2021 and 77 in 2020. Deaths caused by drug overdoses and COVID-19 infections were key contributors to the decline, the CDC ...
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It was 20 cm (8 in) long (including the tail) and probably would have looked rather similar to modern lizards. It had small sharp teeth and probably ate small millipedes and insects . It is a precursor of later amniotes (including both the reptiles and the ancestors of mammals).
The Earth and Moon are very likely destroyed by falling into the Sun, just before the Sun reaches the top of its red giant phase. [121] [note 3] Before the final collision, the Moon possibly spirals below Earth's Roche limit, breaking into a ring of debris, most of which falls to the Earth's surface. [123]