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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 ...
Jong-Fast is the daughter of novelist Erica Jong [2] and author Jonathan Fast, and the granddaughter of writer Howard Fast. [3] She was raised in a Jewish family, though she has mentioned that her nanny "raised [her] Catholic," despite not partaking in the sacraments. [4] Her parents divorced during her childhood, and she was raised as an only ...
Life is a quality that distinguishes matter that has biological processes, such as signaling and self-sustaining processes, from matter that does not. It is defined descriptively by the capacity for homeostasis , organisation , metabolism , growth , adaptation , response to stimuli , and reproduction .
Animals also vary in the degree of coupling between oxidative phosphorylation and ATP production, the amount of saturated fat in mitochondrial membranes, the amount of DNA repair, and many other factors that affect maximum life span. [9] Furthermore, a number of species with high metabolic rate, like bats and birds, are long-lived.
Species go extinct constantly as environments change, as organisms compete for environmental niches, and as genetic mutation leads to the rise of new species from older ones. 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 ...
Today’s reality TV wouldn’t exist without The Simple Life. The original series, ... depict the rift that eventually caused the women to go their separate ways. It took a long time—they had ...
In this direction, although life's dynamics may be argued to go against the tendency of the second law, life does not in any way conflict with or invalidate this law, because the principle that entropy can only increase or remain constant applies only to a closed system which is adiabatically isolated, meaning no heat can enter or leave, and ...
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