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Life history theory (LHT) is an analytical framework [1] designed to study the diversity of life history strategies used by different organisms throughout the world, as well as the causes and results of the variation in their life cycles. [2]
Life history is an interviewing method used to record autobiographical history from an ordinary person's perspective, often gathered from traditionally marginalized groups. It was begun by anthropologists studying Native American groups around the 1900s, and was taken up by sociologists and other scholars, though its popularity has waxed and ...
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 ...
The term life history is often used, particularly for organisms such as the red algae which have three multicellular stages (or more), rather than two. [ 3 ] Life cycles that include sexual reproduction involve alternating haploid ( n ) and diploid (2 n ) stages, i.e., a change of ploidy is involved.
Life history may refer to: Life history theory, a theory of biological evolution that seeks to explain aspects of organisms' anatomy and behavior by reference to the way that their life histories have been shaped by natural selection; Life history (sociology), the overall picture of an informant's or interviewee's life
One significant secular example of a biography from this period is the life of Charlemagne by his courtier Einhard. In Medieval Western India, there was a Sanskrit Jain literary genre of writing semi-historical biographical narratives about the lives of famous persons called Prabandhas.
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.
The life course approach examines an individual's life history and investigates, for example, how early events influenced future decisions and events such as marriage and divorce, [4] engagement in crime, or disease incidence. [5]