&lt;p style=&quot;color: rgb(113, 116, 141);&quot;&gt;&lt;span calibri=&quot;&quot; light&quot;;=&quot;&quot; font-variant-numeric:=&quot;&quot; normal;=&quot;&quot; font-variant-east-asian:=&quot;&quot; color:=&quot;&quot; red;=&quot;&quot; letter-spacing:=&quot;&quot; 0pt;=&quot;&quot; font-weight:=&quot;&quot; bold;=&quot;&quot; vertical-align:=&quot;&quot; baseline;&quot;=&quot;&quot; style=&quot;font-size: 32pt;&quot;&gt;IV- Action de l&rsquo;Homme sur le sol :&lt;/span&gt;&lt;span calibri=&quot;&quot; light&quot;;=&quot;&quot; font-variant-numeric:=&quot;&quot; normal;=&quot;&quot; font-variant-east-asian:=&quot;&quot; color:=&quot;&quot; red;=&quot;&quot; letter-spacing:=&quot;&quot; 0pt;=&quot;&quot; vertical-align:=&quot;&quot; baseline;&quot;=&quot;&quot; style=&quot;font-size: 32pt;&quot;&gt;&lt;br&gt;&lt;/span&gt;&lt;span calibri=&quot;&quot; light&quot;;=&quot;&quot; font-variant-numeric:=&quot;&quot; normal;=&quot;&quot; font-variant-east-asian:=&quot;&quot; color:=&quot;&quot; rgb(112,=&quot;&quot; 173,=&quot;&quot; 71);=&quot;&quot; letter-spacing:=&quot;&quot; 0pt;=&quot;&quot; font-weight:=&quot;&quot; bold;=&quot;&quot; vertical-align:=&quot;&quot; baseline;&quot;=&quot;&quot; style=&quot;font-size: 24pt;&quot;&gt;&amp;nbsp;1- Quelques aspects de la d&eacute;gradation du sol :&lt;/span&gt;&lt;/p&gt;&lt;p style=&quot;color: rgb(113, 116, 141);&quot;&gt;&lt;span calibri=&quot;&quot; light&quot;;=&quot;&quot; font-variant-numeric:=&quot;&quot; normal;=&quot;&quot; font-variant-east-asian:=&quot;&quot; color:=&quot;&quot; rgb(112,=&quot;&quot; 173,=&quot;&quot; 71);=&quot;&quot; letter-spacing:=&quot;&quot; 0pt;=&quot;&quot; font-weight:=&quot;&quot; bold;=&quot;&quot; vertical-align:=&quot;&quot; baseline;&quot;=&quot;&quot; style=&quot;font-size: 24pt;&quot;&gt;&lt;span style=&quot;font-size: 28pt; font-variant-numeric: normal; font-variant-east-asian: normal; letter-spacing: 0pt; vertical-align: baseline;&quot;&gt;2- Quelques pratiques d&rsquo;am&eacute;lioration de rendement de sol :&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;&lt;p style=&quot;color: rgb(113, 116, 141);&quot;&gt;&lt;span calibri=&quot;&quot; light&quot;;=&quot;&quot; font-variant-numeric:=&quot;&quot; normal;=&quot;&quot; font-variant-east-asian:=&quot;&quot; letter-spacing:=&quot;&quot; 0pt;=&quot;&quot; font-weight:=&quot;&quot; bold;=&quot;&quot; vertical-align:=&quot;&quot; baseline;&quot;=&quot;&quot; style=&quot;font-size: 24pt;&quot;&gt;&lt;span style=&quot;font-size: 28pt; font-variant-numeric: normal; font-variant-east-asian: normal; letter-spacing: 0pt; vertical-align: baseline;&quot;&gt;Pr&eacute;paration de projet&lt;span style=&quot;color: rgb(112, 173, 71);&quot;&gt;&amp;nbsp;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;