UNIT OVERVIEW

This revision guide covers your Term 4 work on the diversity of life and Earth's history. You will revise how scientists organise living things, what fossils tell us about the past, and why South Africa's fossil sites matter to the world.

What you will revise:

• Biodiversity and why it matters
• How scientists classify living things (the five kingdoms)
• The history of life on Earth, including fossils and mass extinctions
• South African fossil sites and their importance

What you need first: Basic understanding of cells, ecosystems, and how scientists investigate (from Terms 1–3).

By the end of this revision, you should be able to:

• Define key terms accurately
• Classify organisms into the correct kingdoms
• Interpret fossil evidence and geological timelines
• Answer CAPS-style examination questions confidently

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