The Carbon Cycle

AQA COMBINED SCIENCE • BIOLOGY Start

Introduction

The Carbon Cycle

Carbon is constantly recycled between the atmosphere, living organisms, and fossil fuels. Click Next to step through each process that moves carbon between these stores.

Word / symbol equation

Teacher note Set the scene: every carbon atom in a student's body has been around for ~4.5 billion years and has cycled through countless plants, animals, and atmosphere over time. The cycle isn't a one-way trip — it's a balance.

Atmosphere CO₂ Biomass Fossil fuels

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