EcologyIntroduction

Carbon's Endless Journey

Part of Carbon Cycle — GCSE Biology

This introduction covers Carbon's Endless Journey within Carbon Cycle for GCSE Biology. Topic 3: Carbon Cycle It is section 1 of 11 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 11

Practice

15 questions

Recall

20 flashcards

📖 Carbon's Endless Journey

The carbon atoms in your body right now might once have been in a dinosaur, a medieval tree, or floating in the atmosphere! Carbon constantly cycles between the air, living things, and the ground. It's never created or destroyed — just endlessly recycled. Understanding this cycle helps us understand climate change!

Keep building this topic

Read this section alongside the surrounding pages in Carbon Cycle. That gives you the full topic sequence instead of a single isolated revision point.

The Carbon Cycle — Visual Overview Key Facts Deep Dive: Why CO₂ is Increasing

Practice Questions for Carbon Cycle

Which process removes CO₂ from the atmosphere?

A. Respiration
B. Photosynthesis
C. Combustion
D. Decomposition

1 markfoundation

Explain how decomposers return carbon to the atmosphere.

3 marksstandard

Quick Recall Flashcards

What does the carbon cycle do?

The carbon cycle continuously moves carbon between the atmosphere (as CO₂), living organisms, the soil, and fossil fuels. Carbon is never created or destroyed — it is recycled.

How does decomposition return carbon to the atmosphere?

Decomposers (bacteria and fungi) break down dead organisms. They respire, releasing CO₂ back into the atmosphere. Without decomposers, carbon would be locked in dead material forever.

15 questions on Carbon Cycle — practise free

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Carbon Cycle

The Carbon Cycle — Visual Overview