Warning: Use of undefined constant referer - assumed 'referer' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 102

Warning: Use of undefined constant host - assumed 'host' (this will throw an Error in a future version of PHP) in /usr/home/essaywo/public_html/essays on line 105

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 106

Warning: Cannot modify header information - headers already sent by (output started at /usr/home/essaywo/public_html/essays:102) in /usr/home/essaywo/public_html/essays on line 109
Mamifere - Paper

Mamifere

MAMIFERE

-DELFINII-

CLASA : Mammalia
ORDINUL : Ceteaceea
SUBORDINUL : Odontoceti


Capabili sa despice apele marilor si oceanelor cu o viteza de doi metri pe secunda,ba chiar sa-si ofere uneori cate un mic sprint de 10m /s(adica sa inoate de cinci ori mai repede decat marii campioni olimpici),delfinii sunt cu adevarat cele mai gratioase si mai elegante vietuitoare din mediul marin.Placerea lor de a inota si de a face surf pe coama valurilor,in urma sau in fata marilor vapoare, uluitoarele lor salturi acrobatice fac din ei niste virtuosi fara seaman ai necuprinselor intinderi marine.
Delfinii sunt mamifere marine din familia cetaceelor.In functie de morfologia si ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

in apa.Timp de 10 MA,aceste balene si delfini primitivi au dobandit un corp alungit si hidrodinamic, care le-a permis sa se deplaseze tot mai lesne in apele oceanice.
Membrele anterioare s-au transformat in inotatoarele ce le servesc la mentinerea directiei si la franare.In ceea ce priveste coada,atat pestii,cat si cetaceele o folosesc la inot,dar fiecare in felul sau.
Ca toate mamiferele,cetaceele sunt inzestrate cu plamani,prin intermediul carora respira aer.Cand animalul revine la suprafata pentru a respira,acesta se deschide rapid, mai intai pentru a elimina aerul viciat,apoi pentru a inspira aer proaspat.Dupa o plonjare de durata,aerul expulzat poate atinge o vitaza de 150km/h.Toate cetaceele cu dinti,printre care se numara si delfinii,dispun de un sistem complex de saci si conducte chiar sub event.Facand sa circule aerul pe aici,delfinii produc toate acele sunete de care se servesc pentru comunicare si ecolocatie.
Cele 45 de specii de delfinide recenzate pe intreg ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.


Already a member? Login


CITE THIS PAGE:

Mamifere. (2012, May 27). Retrieved December 23, 2024, from http://www.essayworld.com/essays/Mamifere/101052
"Mamifere." Essayworld.com. Essayworld.com, 27 May. 2012. Web. 23 Dec. 2024. <http://www.essayworld.com/essays/Mamifere/101052>
"Mamifere." Essayworld.com. May 27, 2012. Accessed December 23, 2024. http://www.essayworld.com/essays/Mamifere/101052.
"Mamifere." Essayworld.com. May 27, 2012. Accessed December 23, 2024. http://www.essayworld.com/essays/Mamifere/101052.
JOIN NOW
Join today and get instant access to this and 50,000+ other essays


PAPER DETAILS
Added: 5/27/2012 01:40:19 PM
Submitted By: Wobwobwob
Category: Science & Nature
Type: Free Paper
Words: 877
Pages: 4

Save | Report

SHARE THIS PAPER

SAVED ESSAYS
Save and find your favorite essays easier

SIMILAR ESSAYS
» Macbeth, Act 4 Scene 2 Importa
» The History And Development Of ...
» Enders Game--enders Empathic A
» Frankenstein
» Frankenstein: Good And Bad Choi...
» A Separate Peace: Changes
» Introductions to Macroeconomics
» Cell Theory
» The Great Gatsby 9
» Being A Dancer
Copyright | Cancel | Contact Us

Copyright © 2024 Essayworld. All rights reserved