In general, the more hydrophobic ,less polar, and larger an organic contaminant molecule, the less likely it is to biodegrade and the more likely it is to adhere to sediment particles and sediment organic carbon matter. more volatile,more is the tendency of biodegradability. more hydrophillic,then non polar and its more biodegradable . Solution In general, the more hydrophobic ,less polar, and larger an organic contaminant molecule, the less likely it is to biodegrade and the more likely it is to adhere to sediment particles and sediment organic carbon matter. more volatile,more is the tendency of biodegradability. more hydrophillic,then non polar and its more biodegradable ..