Soil Aggregate (IMAGE) University of Southampton Caption The attached image shows the boundary of the soil aggregate (left), the bulk soil geometry comprising of a collection of aggregates (middle) and the internal pore structure of the soil aggregate, which is composed of a selection of soil particles (right). The soil particles are shown in brown, the water in blue and the air bubbles in white. Credit University of Southampton Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.