CE 7 Level Core Concepts Post-Test Practice 2026 – Complete Exam Prep

The significance of the carbon cycle lies in its essential role in regulating Earth’s climate and providing energy to living organisms. Carbon dioxide, a key component of the carbon cycle, is a greenhouse gas that helps to trap heat in the atmosphere, contributing to the greenhouse effect, which maintains the planet's temperature and enables life. Additionally, the cycle facilitates the process of photosynthesis in plants, allowing them to convert carbon dioxide into glucose and oxygen, which are vital for the energy needs of almost all living organisms. This interconnected system ensures that carbon is continuously recycled through the environment, supporting a balance that sustains ecosystems and the organisms within them.