AP Biology

Advanced Placement Biology course covering cellular processes, genetics, evolution, and ecology.

Advanced Topics

Interactions in Ecosystems

Web of Life

Ecosystems are dynamic networks where living organisms interact with each other and the physical environment.

Main Interactions

  • Food Chains and Webs: Show how energy flows from producers to consumers and decomposers.
  • Symbiosis: Includes mutualism, commensalism, and parasitism.
  • Biogeochemical Cycles: Water, carbon, nitrogen, and phosphorus cycles recycle essential elements.

Real-World Connections

  • Deforestation can disrupt food webs and reduce biodiversity.
  • Coral reefs are affected by changes in water temperature and acidity.

Why It Matters

Understanding these interactions helps us protect environments and manage resources wisely.

Examples

  • Bees pollinate flowers, helping plants reproduce.

  • Wolves reintroduced to Yellowstone changed the river ecosystem.

In a Nutshell

Ecosystems involve complex interactions that sustain life and maintain balance.