<html>  <head> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <title>Lerequin</title> <meta name="GENERATOR" content="Microsoft FrontPage 4.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <!--mstheme--><link rel="stylesheet" type="text/css" href="_themes/bubbles/bubb1111.css"><meta name="Microsoft Theme" content="bubbles 1111, default"> <meta name="Microsoft Border" content="tl, default"> </head>  <body><!--msnavigation--><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td>  <p align="center"><font size="6"><strong><img src="_derived/lerequin.htm_cmp_bubbles110_bnr.gif" width="600" height="60" border="0" alt="Le requin"></strong></font><br> <font size="2"> <nobr>[&nbsp;<a href="exposes.htm">Remonter</a>&nbsp;]</nobr> <nobr>[&nbsp;<a href="belfort.htm">Belfort</a>&nbsp;]</nobr> <nobr>[&nbsp;<a href="lelectricite.htm">L'&nbsp;lectricit</a>&nbsp;]</nobr> <nobr>[&nbsp;<a href="leurope.htm">L'&nbsp;Europe</a>&nbsp;]</nobr> 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if(MSFPhover) { MSFPnav14n=MSFPpreload("_derived/espace_tice.htm_cmp_bubbles110_vbtn.gif"); MSFPnav14h=MSFPpreload("_derived/espace_tice.htm_cmp_bubbles110_vbtn_a.gif"); } // --></script><a href="espace_tice.htm" language="JavaScript" onmouseover="if(MSFPhover) document['MSFPnav14'].src=MSFPnav14h.src" onmouseout="if(MSFPhover) document['MSFPnav14'].src=MSFPnav14n.src"><img src="_derived/espace_tice.htm_cmp_bubbles110_vbtn.gif" width="140" height="60" border="0" alt="Espace TICE" name="MSFPnav14"></a></span>  <p>&nbsp;<p>&nbsp;<p>&nbsp; </td><td valign="top" width="24"></td><!--msnavigation--><td valign="top"> <p>&nbsp;</p> <p class="MsoTitle"><span style="mso-spacerun: yes">&nbsp;&nbsp;</span><i><span style="font-family:CactusDB;font-weight:normal"><!--[if gte vml 1]><v:shapetype  id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t"  path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f">  <v:stroke joinstyle="miter"/>  <v:formulas>   <v:f eqn="if lineDrawn pixelLineWidth 0"/>   <v:f eqn="sum @0 1 0"/>   <v:f eqn="sum 0 0 @1"/>   <v:f eqn="prod @2 1 2"/>   <v:f eqn="prod @3 21600 pixelWidth"/>   <v:f eqn="prod @3 21600 pixelHeight"/>   <v:f eqn="sum @0 0 1"/>   <v:f eqn="prod @6 1 2"/>   <v:f eqn="prod @7 21600 pixelWidth"/>   <v:f eqn="sum @8 21600 0"/>   <v:f eqn="prod @7 21600 pixelHeight"/>   <v:f eqn="sum @10 21600 0"/>  </v:formulas>  <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/>  <o:lock v:ext="edit" aspectratio="t"/> </v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" style='width:75pt;  height:42.75pt'>  <v:imagedata src="images/Cliparts/lerequ1.gif"   o:title="AN00020A"/> </v:shape><![endif]--> </span></i></p> <p class="MsoNormal"><span style="font-size:12.0pt">Les requins vivent dans tous les ocans du monde&nbsp;: des mers chaudes tropicales aux mers polaires glaces. Certaines espces se cantonnent dans des eaux chaudes, dautres migrent chaque anne</span><i><span style="font-family:CactusDB;font-weight:normal"><img src="images/Cliparts/lerequ1.gif" v:shapes="_x0000_i1025" align="right" width="100" height="57"></span></i><span style="font-size:12.0pt"> vers des eaux plus fraches, dautres encore traversent un large ventail de tempratures aquatiques. Les requins mesurent de 15 m  30 mtres, cest  dire la hauteur de huit hommes.</span><span style="font-size:12.0pt"><o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">&nbsp;<o:p> </o:p> </span></p> <p class="MsoNormal"><b><u><span style="font-size: 12.0pt; font-family: CactusDB">Les sens</span></u></b></p> <p class="MsoNormal"><span style="font-size:12.0pt">Tous les requins ont un bon odorat. Ils chassent en flairant leau. Ils dtectent le poisson ou le sang humain en trs petite concentration. Ils ont une excellente vue et ils dtectent les vibrations et les mouvements. <o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">&nbsp;</span><b><u><span style="font-size:12.0pt;font-family:CactusDB">La respiration</span></u></b><span style="font-size:12.0pt"><o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">&nbsp;Les requins nagent la gueule ouverte et ils absorbent leau. Les branchies extraient loxygne de leau, qui est envoy dans le sang et liminent un rsidu&nbsp;: le dioxyde de carbone. <o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">&nbsp;</span><b><u><span style="font-size:12.0pt;font-family:CactusDB">La peau</span></u></b><span style="font-size:12.0pt"><o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">&nbsp;Les requins ont des cailles plates mais des milliers de denticules. Chaque denticules est compose dune substance osseuse trs dure qui pousse comme une dent. En dessous, la peau dure comme du cuir protge les requins des morsures des autres animaux.<o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">&nbsp;</span><b><u><span style="font-size:12.0pt;font-family:CactusDB">Les dents</span></u></b><span style="font-size:12.0pt"><o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">Elles sont triangulaires et trs aiguises. Elles sont remplaces en permanence. Dans sa vie le requin en perd des millions.<o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">&nbsp;</span><b><u><span style="font-size:12.0pt;font-family:CactusDB">La reproduction</span></u></b><span style="font-size:12.0pt"><o:p> </o:p> </span></p> <p class="MsoNormal"><span style="font-size:12.0pt">La plupart des requins ont une saison des amours. Certains requins femelles pondent des ufs (fertiliss par le mle) aprs laccouplement. Dautres gardent leurs ufs fertiliss  lintrieur jusqu ce quils souvrent. Les jeunes requins grandissent lentement et se dbrouillent seuls.<o:p> </o:p> </span></p> <p class="MsoNormal"><b><i><span style="font-family:CactusDB"><font size="2"><u>Expos de Stevan</u></font></span></i></b><i><o:p> </o:p> </i></p> &nbsp;<!--msnavigation--></td></tr><!--msnavigation--></table></body>  </html> 
