A4. Ecosystems | IB Biology

THEME A

A4. Ecosystems

Unity and Diversity

Explore the processes of evolution and speciation that drive biodiversity, and examine conservation strategies to protect our planet’s precious ecosystems.

🧬 A4.1 Evolution and Speciation

Study the mechanisms of evolution and how new species form through various speciation processes.

STANDARD LEVEL

Presentation Slides End of Topic Quiz

HIGHER LEVEL

Presentation Slides End of Topic Quiz

STANDARD + HIGHER LEVEL

Workbook (Both Levels)

SL+HL

🌍 A4.2 Conservation of Biodiversity

Examine the causes of biodiversity loss and explore conservation strategies to protect endangered species and ecosystems.

STANDARD LEVEL

Presentation Slides End of Topic Quiz Workbook

🧬

A4.1 Evolution and Speciation

SLIDES

A4.1 Evolution and Speciation (SL) – Presentation Slides

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View Slides 1

QUIZ

A4.1 Evolution and Speciation (SL) – End of Topic Quiz (20 marks)

📝 Complete the quiz above and submit your answers

Take Quiz 2

SLIDES

A4.1 Evolution and Speciation (HL) – Presentation Slides

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View Slides 3

QUIZ

A4.1 Evolution and Speciation (HL) – End of Topic Quiz (20 marks)

📝 Complete the quiz above and submit your answers

Take Quiz 4

📚

Shared Materials (Standard + Higher Level)

DOC

A4.1 Evolution and Speciation – Workbook (STANDARD + HIGHER LEVEL)

SL+HL

📖 Questions and answers workbook for both Standard and Higher Level students

View Workbook 5

🌍

A4.2 Conservation of Biodiversity

SLIDES

A4.2 Conservation of Biodiversity (SL) – Presentation Slides

💡 Use arrow keys or click to navigate slides

View Slides 6

QUIZ

A4.2 Conservation of Biodiversity (SL) – End of Topic Quiz (20 marks)

📝 Complete the quiz above and submit your answers

Take Quiz 7

DOC

A4.2 Conservation of Biodiversity (SL) – Workbook

📖 Questions and answers workbook for Standard Level students

View Workbook 8