Plants use sunlight, soil, and water to grow. Animals use leaves, branches, trees, or soil for shelter and other living things for food. These are examples of interactions of biotic and abiotic elements in ecosystems. In a pond, the plants, soil, and water create suitable habitat for many different birds, insects, and fish. Other animals, such as bears, eat fish and berries. Feeding interactions give living things the nutrients they need to survive.
