Search results
Results from the WOW.Com Content Network
An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth.Such an event is identified by a sharp fall in the diversity and abundance of multicellular organisms.
Also a common sense concept linked to the chances of an effective rescue effect on islands, is the size of the island itself. This is called the ‘target‐area effect’, and it states that:The larger the area of the island the more likely a colonization is, either of active or passive immigrants. [1]
As the possibility of extinction became more widely established in the sciences, so did the prospect of human extinction. [4] In the 19th century, human extinction became a popular topic in science (e.g., Thomas Robert Malthus's An Essay on the Principle of Population) and fiction (e.g., Jean-Baptiste Cousin de Grainville's The Last Man).
A growing number of scientists believe a sixth mass extinction event of a magnitude equal to the prior five has been unfolding for the past 10,000 years as humans have made their mark around the ...
In this way, modern genetics undoubtedly lifts the veil from the evolution of biotypes, Jordanones and Linneones [i.e. variations within a species] [j] (a kind of microevolution), but that evolution of the higher systematic groups, which has always particularly occupied the minds of men (a kind of macroevolution), lies entirely outside its ...
Extinction event – a widespread and rapid decrease in the amount of life on Earth. Such an event is identified by a sharp reduction in the diversity and abundance of macroscopic life. Also known as a mass extinction or biotic crisis. Human extinction – the hypothesized end of the human species.
Humans are the main cause of the current mass extinction, called the Holocene extinction, driving extinctions to 100 to 1000 times the normal background rate. [ 120 ] [ 121 ] Though most experts agree that human beings have accelerated the rate of species extinction, some scholars have postulated without humans, the biodiversity of the Earth ...
He later concluded that the extinction of humanity would be the best solution to the Earth's environmental problems. [2] He believes that this idea has also been held by some people throughout human history. [7] Voluntary Human Extinction Movement cartoon by Nina Paley. In 1991, Knight began publishing VHEMT's newsletter, [2] known as These ...