Zarejestruj
się u nas lub też
zaloguj
, jeśli posiadasz już konto.
Forum Free-java Darmowe Gry JAVA Strona Główna
->
Filmy
Napisz odpowiedź
Użytkownik
Temat
Treść wiadomości
Emotikony
Więcej Ikon
Kolor:
Domyślny
Ciemnoczerwony
Czerwony
Pomarańćzowy
Brązowy
Żółty
Zielony
Oliwkowy
Błękitny
Niebieski
Ciemnoniebieski
Purpurowy
Fioletowy
Biały
Czarny
Rozmiar:
Minimalny
Mały
Normalny
Duży
Ogromny
Zamknij Tagi
Opcje
HTML:
TAK
BBCode
:
TAK
Uśmieszki:
TAK
Wyłącz HTML w tym poście
Wyłącz BBCode w tym poście
Wyłącz Uśmieszki w tym poście
Kod potwierdzający: *
Wszystkie czasy w strefie CET (Europa)
Skocz do:
Wybierz forum
Ogłoszenia
----------------
Regulamin
Ogłoszenia
Gry Java
----------------
Nokia
Siemens
Sony Ericsson
Motorola
Inne
Szukam
Aplikacje
----------------
Aplikacje JAVA
Szukam
Inne
----------------
Tapety
Motywy
Animacje
Filmy
Dzwonki
O Telefonach
----------------
Nokia
Siemens
Sony Ericsson
Motorola
Inne
Porównania
Inne
----------------
Pomysły na rozbudowe forum
Off-topic
Śmietnik
Przegląd tematu
Autor
Wiadomość
zngmqk19
Wysłany: Nie 11:39, 27 Mar 2011
Temat postu: No other relationships nike air chaussures
In the earliest works of science, a species was simply an individual organism that represented a group of similar or nearly identical organisms.
nike air chaussures
No other relationships beyond that group were implied. Aristotle used the words genus and species to mean generic and specific categories. Aristotle and other pre-Darwinian scientists took the species to be distinct and unchanging, with an "essence", like the chemical elements. When early observers began to develop systems of organization for living things, they began to place formerly isolated species into a context. Many of these early delineation schemes would now be considered whimsical and these included consanguinity based on color (all plants with yellow flowers) or behavior (snakes, scorpions and certain biting ants).
In the 18th century Swedish scientist Carolus Linnaeus classified organisms according to differences in the form of reproductive apparatus. Although his system of classification sorts organisms according to degrees of similarity,
replica luxury watches
it made no claims about the relationship between similar species. At that time,
nike air chaussures
, it was still widely believed that there was no organic connection between species, no matter how similar they appeared. This approach also suggested a type of idealism: the notion that each species existed as an "ideal form". Although there are always differences (although sometimes minute) between individual organisms, Linnaeus considered such variation problematic. He strove to identify individual organisms that were exemplary of the species, and considered other non-exemplary organisms to be deviant and imperfect.
Charles Darwin and Alfred Wallace provided what scientists now consider as the most powerful and compelling theory of evolution. Darwin argued that it was populations that evolved, not individuals. His argument relied on a radical shift in perspective from that of Linnaeus: rather than defining species in ideal terms (and searching for an ideal representative and rejecting deviations), Darwin considered variation among individuals to be natural. He further argued that variation, far from being problematic, actually provides the explanation for the existence of distinct species.
Darwin's work drew on Thomas Malthus' insight that the rate of growth of a biological population will always outpace the rate of growth of the resources in the environment, such as the food supply. As a result, Darwin argued, not all the members of a population will be able to survive and reproduce. Those that did will,
cheap nhl jerseys
on average, be the ones possessing variations—however slight—that make them slightly better adapted to the environment. If these variable traits are heritable, then the offspring of the survivors will also possess them. Thus, over many generations, adaptive variations will accumulate in the population, while counter-adaptive traits will tend to be eliminated.
fora.pl
- załóż własne forum dyskusyjne za darmo
phpBB (C) 2001, 2005 phpBB Group
Theme Retred created by
JR9
for
stylerbb.net
&
Programosy
Regulamin