Section 18 2 Ecology of Organisms Review Guide

Focus on the relationships between different species and their environment. Recognize how factors like energy flow, nutrient cycles, and species interactions shape ecosystems. These components form the foundation of life on Earth.

Study the connections between producers, consumers, and decomposers. Producers, such as plants, convert energy from the sun into food, while consumers depend on others for energy. Decomposers break down dead material, returning vital nutrients to the soil.

Next, examine the role of different habitats and niches in supporting various life forms. A species’ role within its environment influences how it interacts with others and the resources it relies on. Understanding these roles helps explain biodiversity and ecosystem health.

Finally, consider how external forces like climate change or human intervention impact these delicate systems. The balance of natural cycles can be disrupted, affecting the stability of all living beings. Gaining a clear understanding of these concepts will deepen your grasp of environmental science.