Trees Anchored in Bedrock (IMAGE) U.S. National Science Foundation Caption Trees anchored in bedrock break up the rock and create soil, but most nutrients come from dust. Credit Lindsay Arvin 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.