Other Free Encyclopedias » Science Encyclopedia » Science & Philosophy: Ambiguity - Ambiguity to Anticolonialism in Middle East - Ottoman Empire And The Mandate System

Animal

animals species worms multicellular

Animals are creatures in the kingdom Animalia, one of the five major divisions of organisms (the others are: Monera or bacteria, Fungi, Protists or protozoans, and Plantae or plants). Animals are multicellular, eukaryotic organisms, with cells that do not have walls made of cellulose. Animals are capable of voluntary, spontaneous movements, often in response to sensory perceptions. For their nutrition, animals require sources of biologically fixed energy, that is, the biomass of either plants or other animals. Zoology is the scientific study of animals.

The time of the origin of animals during Earth's evolutionary history is not known, because the first animals were soft-bodied, multicellular life forms that did not preserve well as fossils. By the time multicellular animals became represented in the geological record about 640-670 million years ago, there were already numerous phyla of animals, so the actual origin of the kingdom must have occurred earlier.

Most zoologists recognize the existence of 30-35 phyla of animals, some of which are extinct and only known from their fossil record. The simplest animals with the most ancient lineages are asymmetric or radially symmetric, for example, Porifera (sponges) and Cnidaria (jellyfish and sea anemones). The simplest of the bilaterally symmetric animals include Platyhelminthes (flatworms) and Nematoda (nematodes). Coelomates are a functional group of animals with an enclosed body cavity, the best known of which are Mollusca (snails, clams, octopus, and squid), Annelida (segmented worms and leeches), Arthropoda (insects, spiders, and crustacea), Echinodermata (sea urchins and starfish), and Chordata (fish, amphibians, reptiles, birds, and mammals).

About one million species of animals have been named. However, biologists estimate that a much larger number of animal species has yet to be discovered, and that the actual total could be as large as 30-50 million species. The undiscovered species mostly occur in Earth's richest ecosystems, especially old-growth tropical rain forests, and perhaps the deep oceans. Most of the undiscovered species of terrestrial animals are believed to be insects, especially beetles.

Bill Freedman

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or

Vote down Vote up

over 1 year ago


Packers and Movers Mumbai go to:-
http://www.movers5th.in/packers-and-movers-mumbai/
Packers and Movers Delhi go to:-
http://www.movers5th.in/packers-and-movers-delhi/
Packers and Movers Gurgaon go to:-
http://www.movers5th.in/packers-and-movers-gurgaon/

Vote down Vote up

over 2 years ago

Nowadays, it's just not cool if you're a smartphone and you don't have a 5” display with full HD resolution. And while both of these phones have this feature, we tend to prefer the screen of the Galaxy S4 over the one of the Xperia Z. In our opinion, the Super AMOLED panel of the GS4 is superior thanks to its higher contrast, more vibrant colors and much better viewing angles. The LCD screen of the Xperia Z just isn't lively enough to make us want to keep staring at it.
wordpress themes
http://ethemecity.com/premium-wordpress-themes-for-2014/

Vote down Vote up

over 4 years ago

Nowadays, it's just not cool if you're a smartphone and you don't have a 5” display with full HD resolution. And while both of these phones have this feature, we tend to prefer the screen of the Galaxy S4 over the one of the Xperia Z. In our opinion, the Super AMOLED panel of the GS4 is superior thanks to its higher contrast, more vibrant colors and much better viewing angles. The LCD screen of the Xperia Z just isn't lively enough to make us want to keep staring at it.

Vote down Vote up

over 1 year ago

Packers and Movers in Pune go to:-
http://www.moveby5th.in/packers-and-movers-pune.html
Packers and Movers in Bangalore go to:-
http://www.moveby5th.in/packers-and-movers-bangalore.html
Packers and Movers in Hyderabad go to:-
http://www.moveby5th.in/packers-and-movers-hyderabad.html
Packers and Movers in Mumbai go to:-
http://www.moveby5th.in/packers-and-movers-mumbai.html
Packers and Movers in Gurgaon go to:-
http://www.moveby5th.in/packers-and-movers-gurgaon.html
Packers and Movers in Delhi go to:-
http://www.moveby5th.in/packers-and-movers-delhi.html

Vote down Vote up

over 1 year ago

Packers and Movers Chennai go to:-
http://www.movers5th.in/packers-and-movers-chennai/
Packers and Movers Noida go to:-
http://www.movers5th.in/packers-and-movers-noida/
Packers and Movers Navi Mumbai go to:-
http://www.movers5th.in/packers-and-movers-navimumbai/
Packers and Movers Thane go to:-
http://www.movers5th.in/packers-and-movers-thane/
Packers and Movers Ghaziabad go to:-
http://www.movers5th.in/packers-and-movers-ghaziabad/
Packers and Movers Faridabad go to:-
http://www.movers5th.in/packers-and-movers-faridabad/

Vote down Vote up

over 1 year ago

Packers and Movers Hyderabad go to:-
http://www.movers5th.in/packers-and-movers-hyderabad/
Packers and Movers Bangalore go to:-
http://www.movers5th.in/packers-and-movers-bangalore/
Packers and Movers Pune go to:-
http://www.movers5th.in/packers-and-movers-pune/

Vote down Vote up

almost 2 years ago


Thanks for all your information, Website is very nice and informative content.
http://www.expert5th.in/packers-and-movers-thane/
http://www.expert5th.in/packers-and-movers-navimumbai/
http://www.expert5th.in/packers-and-movers-ghaziabad/
http://www.expert5th.in/packers-and-movers-faridabad/

Vote down Vote up

almost 2 years ago


This article is really fantastic and thanks for sharing the valuable post.
http://www.expert5th.in/packers-and-movers-delhi/
http://www.expert5th.in/packers-and-movers-bangalore/
http://www.expert5th.in/packers-and-movers-gurgaon/
http://www.expert5th.in/packers-and-movers-pune/

Vote down Vote up

almost 2 years ago

Thanks for post this helpful post - Please visit for More information about -
http://www.expert5th.in/packers-and-movers-hyderabad/
http://www.expert5th.in/packers-and-movers-mumbai/
http://www.expert5th.in/packers-and-movers-chennai/
http://www.expert5th.in/packers-and-movers-noida/

Vote down Vote up

almost 2 years ago

Thanks for all your information, Website is very nice and informative content.
http://www.expert5th.in/packers-and-movers-thane/
http://www.expert5th.in/packers-and-movers-navimumbai/
http://www.expert5th.in/packers-and-movers-ghaziabad/
http://www.expert5th.in/packers-and-movers-faridabad/

Vote down Vote up

almost 2 years ago

This article is really fantastic and thanks for sharing the valuable post.
http://www.expert5th.in/packers-and-movers-delhi/
http://www.expert5th.in/packers-and-movers-bangalore/
http://www.expert5th.in/packers-and-movers-gurgaon/
http://www.expert5th.in/packers-and-movers-pune/

Vote down Vote up

almost 2 years ago

Thanks for post this helpful post - Please visit for More information about -
http://www.expert5th.in/packers-and-movers-hyderabad/
http://www.expert5th.in/packers-and-movers-mumbai/
http://www.expert5th.in/packers-and-movers-chennai/
http://www.expert5th.in/packers-and-movers-noida/

Vote down Vote up

about 2 years ago

I've learn several excellent stuff here. Definitely value bookmarking for revisiting. I wonder how a lot effort you put to create any such great informative web site.
Top Companies List in India

Vote down Vote up

over 2 years ago

Thanks for your article, it can help me.
Really your post is really very good and I appreciate it.
It’s hard to sort the good from the bad sometimes,
You write very well which is amazing. I really impressed by your post.

Crystal X mengatasi Keputihan
Crystal X Mengobati Keputihan
Cara Mengatasi Keputihan
Cara Mengobati Keputihan
Cara Mengatasi Keputihan Dengan Crystal X
Crystal X mengatasi Keputihan
Crystal X
Crystal X Agar Cepat Hamil
Crystal X
Crystal X Mengobati Kanker Serviks
Crystal X Mengatasi Masalah Haid
Crystal X Merawat Organ Intim

Crystal X mengatasi Keputihan
http://www.crystalxmengatasikeputihan.com/2015/05/cara-mengatasi-keputihan-tanpa-efek.html
Crystal X Mengobati Keputihan
http://www.crystalxmengatasikeputihan.com/2015/04/mengatasi-keputihan-dengan-crystal-x.html
Cara Mengatasi Keputihan Dengan Crystal X
Crystal X Mengatasi Masalah Haid
http://www.crystalxmengatasikeputihan.com
Crystal X Agar Cepat Hamil
http://www.crystalxmengatasikeputihan.com/2015/04/khasiat-crystal-x-merawat-organ-intim.html
Crystal X Mengobati Kanker Serviks
http://www.crystalxmengatasikeputihan.com/2015/04/khasiat-crystal-x-merawat-organ-intim.html
Crystal X Merawat Organ Intim
http://www.crystalxmengatasikeputihan.com/2015/04/khasiat-crystal-x-merawat-organ-intim.html
http://distributor-resmi-nasa.blogspot.com/2013/05/manfaat-dan-bahaya-crystal-x.html

Vote down Vote up

over 2 years ago

http://www.situsterpercaya.com/rajapoker88-com-agen-texas-poker-dan-domino-online-indonesia-terpercaya

Vote down Vote up

over 2 years ago

Nowadays, it's just not cool if you're a smartphone and you don't have a 5” display with full HD resolution. And while both of these phones have this feature, we tend to prefer the screen of the Galaxy S4 over the one of the Xperia Z. In our opinion, the Super AMOLED panel of the GS4 is superior thanks to its higher contrast, more vibrant colors and much better viewing angles. The LCD screen of the Xperia Z just isn't lively enough to make us want to keep staring at it.

Vote down Vote up

over 2 years ago

Nowadays, it's just not cool if you're a smartphone and you don't have a 5” display with full HD resolution. And while both of these phones have this feature, we tend to prefer the screen of the Galaxy S4 over the one of the Xperia Z. In our opinion, the Super AMOLED panel of the GS4 is superior thanks to its higher contrast, more vibrant colors and much better viewing angles. The LCD screen of the Xperia Z just isn't lively enough to make us want to keep staring at it.
No Win No Fee Compensation
http://www.no-win-no-fee-compensation.org.uk/

Vote down Vote up

over 2 years ago

And while both of these phones have this feature, we tend to prefer the screen of the Galaxy S4 over the one of the Xperia Z. In our opinion, the Super AMOLED panel of the GS4 is superior thanks to its higher contrast, more vibrant colors and much better viewing angles. The LCD screen of the Xperia Z just isn't lively enough to make us want to keep staring at it.
Accident Claim
http://www.accidentclaimsguide.org.uk/

Vote down Vote up

over 2 years ago

Richardson Reveals His Easy-To-Do-At-Home Vision Improvement System For Achieving Perfect 20/20 Eyesight Without Surgery..
No Win No Fee Claims
http://www.nowinnofeeclaims.me.uk/

Vote down Vote up

over 2 years ago

Richardson Reveals His Easy-To-Do-At-Home Vision Improvement System For Achieving Perfect 20/20 Eyesight Without Surgery..
No Win No Fee Claims
http://www.nowinnofeeclaims.me.uk/

Vote down Vote up

over 2 years ago

Nowadays, it's just not cool if you're a smartphone and you don't have a 5” display with full HD resolution. And while both of these phones have this feature, we tend to prefer the scree

Vote down Vote up

almost 3 years ago

The LCD screen of the Xperia Z just isn't lively enough to make us want to keep staring at it....cialis 20 mg

Vote down Vote up

over 4 years ago

GReat

Vote down Vote up

over 4 years ago

Most zoologists recognize the existence of 30-35 phyla of animals, some of which are extinct and only known from their fossil record.Most zoologists recognize the existence of 30-35 phyla of animals, some of which are extinct and only known from their fossil record.used office furniture albuquerque

Vote down Vote up

over 4 years ago

I am writing a term paper on this topic and came across your post which was very helpful. Do you know where I can find more information about this.Yearbook Ideas


Vote down Vote up

over 4 years ago

Well, first of all this post is kinda weird. I dont know what you want to trigger with your words. anyways, if someone got a help through this blog then he is a lucky one.

Vote down Vote up

over 4 years ago

Things are very open and intensely clear explanation of issues. was truly information. Your website is very beneficial. Appreciate your sharing.
Moreover, I dont know what you want to trigger with your words. anyways, if someone got a help through this blog then he is a lucky one.

Vote down Vote up

over 4 years ago

Arreta erakartzeko modu izenburuaren bidez. Labur, zorrotz eta gozoa. Izenburua Bakoitzean ad bat ari zaren plangintza, hartu minutu batzuk, nazio egunkari bat irekitzeko eta, enpresa handi bistaratuko da han iragarki batzuk ikusteko.