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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 ...
Human history is the record of humankind from prehistory to the present. Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers . They migrated out of Africa during the Last Ice Age and had spread across Earth's continental land except Antarctica by the end of the Ice Age 12,000 years ago.
The first English use of the expression "meaning of life" appears in Thomas Carlyle's Sartor Resartus (1833–1834), book II chapter IX, "The Everlasting Yea". [1]Our Life is compassed round with Necessity; yet is the meaning of Life itself no other than Freedom, than Voluntary Force: thus have we a warfare; in the beginning, especially, a hard-fought battle.
The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence , mainly fossils .
A lineage of them probably evolved into the bony and cartilaginous fish, after evolving scales, teeth (which allowed the transition to full carnivory), stomachs, spleens, thymuses, myelin sheaths, hemoglobin and advanced, adaptive immunity (the latter two occurred independently in the lampreys and hagfish).
In this sense, history is what happened rather than the academic field studying what happened. When used as a countable noun, a history is a representation of the past in the form of a history text. History texts are cultural products involving active interpretation and reconstruction. The narratives presented in them can change as historians ...
A creation myth or cosmogonic myth is a type of cosmogony, [2] a symbolic narrative of how the world began and how people first came to inhabit it. [ 3 ] [ 4 ] [ 5 ] While in popular usage the term myth often refers to false or fanciful stories, members of cultures often ascribe varying degrees of truth to their creation myths.
The Zaidiyyah historically come from the followers of Zayd ibn Ali. The Alawites are a distinct religion that developed in the 9th/10th century. Historically, Twelver Shia scholars (such as Shaykh Tusi) did not consider Alawites as Shia Muslims while condemning their heretical beliefs. [108] Ibn Taymiyyah also pointed out that Alawites were not ...