NounSingular species Plural species species (plural species)
From Wiktionary under the GNU Free Documentation License. There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring of both genders, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used. Biologists' working definitionA usable definition of the word "species" and reliable methods of identifying particular species is essential for stating and testing biological theories and for measuring biodiversity. Traditionally, multiple examples of a proposed species must be studied for unifying characters before it can be regarded as a species. It is generally difficult to give precise taxonomic rankings to extinct species known only from fossils. Some biologists may view species as statistical phenomena, as opposed to the traditional idea, with a species seen as a class of organisms. In that case, a species is defined as a separately evolving lineage that forms a single gene pool. Although properties such as DNA-sequences and morphology are used to help separate closely-related lineages, this definition has fuzzy boundaries. However, the exact definition of the term "species" is still controversial, particularly in prokaryotes, and this is called the species problem. Biologists have proposed a range of more precise definitions, but the definition used is a pragmatic choice that depends on the particularities of the species concerned. From Wikipedia under the
GNU Free Documentation License What is true about using similarities to classify different species? Q. A- Even dissimilar species can be compared at the level of certain genes. B- Species are not compared for the purpose of classification. C- Genetic similarities are no indication of the relationship between two species. D- It is impossible to compare dissimilar species because they have no traits in common. E- Only similar species can be compared at the level of certain genes. plz plz help Asked by Jocelyn - Sat Nov 8 14:04:30 2008 - - 1 Answers - 0 Comments A. A- Even dissimilar species can be compared at the level of certain genes. Answered by Peter S - Wed Nov 12 12:53:37 2008 Where can I buy different triop species? Q. I am looking to get some different species triops but I cant seem to find a place to buy them on the internet. Does anyone know of any website that sells them or any specific store? I am looking for species Triops numidicus/Triops granarius. Yes, I have used google and no their not on ebay or amazon. Asked by shizknight15 - Tue May 20 23:17:11 2008 - - 2 Answers - 0 Comments A. Triops numidicus are only found in Africa. It is illegal to capture wild triops from ponds and it is also illegal to collect eggs. There is no way that any one would have them. Other triops species like triops Australiensis can be bought at 'www.billabongbugs.com' and triops Cancriformis can be bought on ebay from Dadasis ( Don Dasis ). Other species can be bought like triops newiberri and may be lepirras. I have no idea on how to spell these triops species exept for the Australian on and the European one. I reccomend getting triops cancriformis because Europe is now banning shipping their triops over seas so get them while they last! Answered by Andrew R - Wed May 21 04:28:16 2008 Why do certain species of animals live longer than others?
Q. Under the condition that all are in captive (born in captive, are well fed, and have excellent medical attention), why do certain species have a longer lifespan than others? And is the human lifespan the longest out of all animals? Asked by @ - Sat Jan 12 19:52:11 2008 - - 4 Answers - 0 Comments A. It is believed that the length of life is a trade off between reproduction. The earlier you reproduce, the shorter the lifespan. The later you reproduce, the longer your lifespan. This has actually been shown experimentally with fruit flies. You may have heard of the distinction between K and r species. Viewing a graph of the functional types, we can see that we along with many others are K species, which means we breed later, have more parental care, live longer along with giving birth to fewer offspring. r selected species give birth sooner, have more offspring, shorter lifes, and no parental offspring. Under a captive situation, It must be realized that the animals get amazing medical care and the other factors you mentioned, so you… [cont.] Answered by jarlee2040 - Sat Jan 12 21:50:22 2008 From Yahoo Answer Search: "species" Animal rights groups appeal trapping regulations
Bangor Daily News At least 47 lynx, which are designated as threatened under the federal Endangered Species List, have been caught in traps in Maine since 1999, ... Animal Rights Groups Appeal Trapping Decision MPBN News all 7 news articles » New Endangered Species Listings Wait as Obama Admin Charts New Course
New York Times The Obama administration is lagging behind the pace set by its predecessor for listing endangered species , ... Obama Protecting Fewer Endangered Species than Bush Treehugger Protection Sought for Rare Alabama Fish Under the Endangered Species Act Center for Biological Diversity (press release) Protection Sought for Colorado River Cutthroat Trout Under the Endangered ... Center for Biological Diversity (press release) all 6 news articles » In cross- species whodunit, horned owl's prime suspect
The Spokesman Review A Washington Department of Fish and Wildlife official guessed the dog's assailant was a great horned owl, a species not uncommon on the South Hill. ... and more » From Google News Search: "species" 05 03 24 Species 05 jpg
250px x 352px | 14.70kB [source page] Obviously in the Species films the alien side or beast is brought to the surface species 100 jpg
140px x 100px | 11.50kB [source page] Species Credits Original Film Titel Species Land USA 1995 Kino Start DVD Start 07 09 2004 160 ap indo species1 060207 jpg
120px x 160px | 6.10kB [source page] A Long beaked echidna Zaglossus bruijni is seen AP Conservation International An undescribed species Albericus sp is seen in this handout photo AP Conservation International From Yahoo Image Search: "species" Little Paper Planes: The Endangered Species Print Project
Jess Wheaton ue, 08 Dec 2009 19:27:00 GM The Endangered . Species. Print Project (ESPP) was recently initiated by artists Jenny Kendler and Molly Schafer to offer limited-edition art prints of critically endangered . species. . 100% of sales are donated to specific animal ... The Scorpion Files Newsblog: New Vaejovis species from Mexico
Jan Ove Rein (editor) ue, 08 Dec 2009 09:46:00 GM A new Vaejovis . species. has been described from Mexico: Vaejovis trespicos Zarate-Galvez & Francke, 2009 (Vaejovidae) Abstract: Vaejovis trespicos sp. n., belonging to the Vaejovis mexicanus group, is described from the highlands of ... Bob the Birder: New species for Draycote ?
bob duckhouse ue, 08 Dec 2009 19:30:00 GM In an attempt to restore its battered image as a steward of the environment Severn Trent Water is keen to encourage the re-introduction of some long extinct . species. on its land around Draycote Water, Warwickshire. ... From Google Blog Search: "species" |






