1: While a lot of attention in recent years has been focused on his sons , Princes William and Harry , Charles is next in line to the British throne . 2: But as part of his interest in sustainability , he has championed organic farming and gardening for many years , including on his large country estates . 3: Charles , an advocate of organic farming and traditional architecture , is heir to British throne .
1: Charles 2: he 3: Charles , an advocate of organic farming and traditional architecture