You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <allpages>
      <p pageid="35755" ns="0" title="Bio diverse roof" />
      <p pageid="36601" ns="0" title="Bio diverse roof790" />
      <p pageid="35005" ns="0" title="Botanique condominium" />
      <p pageid="35735" ns="0" title="Breitling Chronomat" />
      <p pageid="35730" ns="0" title="Breitling Superocean Heritage" />
      <p pageid="35731" ns="0" title="Breitling Windrider" />
      <p pageid="36581" ns="0" title="Brown roofs" />
      <p pageid="33061" ns="0" title="Buy cialis" />
      <p pageid="35521" ns="0" title="Buy Tyres" />
      <p pageid="35728" ns="0" title="Buy Tyres223" />
    </allpages>
  </query>
  <query-continue>
    <allpages apcontinue="Buy_Tyres395" />
  </query-continue>
</api>