Aimnova
DashboardMy LearningStudy Plan

Stay in the loop

Study tips, product updates, and early access to new features.

Aimnova

AI-powered IB study platform with personalised plans, instant feedback, and examiner-style marking.

IB Subjects

  • IB Diploma
  • All IB Subjects
  • IB ESS
  • IB Business Management
  • Grade Calculator
  • Exam Timetable 2026
  • ESS Predictions
  • BM Predictions

Study Resources

  • Free Study Notes
  • Revision Guide
  • Flashcards
  • ESS Question Bank
  • BM Question Bank
  • Mock Exams
  • Exam Skills
  • Command Terms

Company

  • Features
  • Pricing
  • About Us
  • Blog
  • Contact
  • Terms
  • Privacy
  • Cookies

© 2026 Aimnova. All rights reserved.

Made with 💜 for IB students worldwide

NotesESSTopic 3.3
Unit 3 · Biodiversity and Conservation · Topic 3.3

IB ESS — Threats to biodiversity

Topic 3.3 examines the major threats facing global biodiversity, including habitat loss, climate change, pollution, overexploitation, and invasive species. Students learn to evaluate the relative significance of each threat and analyse case studies of biodiversity decline.

3.3 FlashcardsExam technique guidePractice questions

What you'll learn in Topic 3.3

  • 3.3.1 Threats to biodiversity
  • 3.3.2 IUCN Red List

Exam relevance

ESS is assessed through Paper 1 (case study) and Paper 2 (short answer & structured questions). Concepts from this topic may appear in either paper, often combined with data analysis or real-world examples.

Suggested study order: Read the notes for each sub-topic below → test yourself with flashcards → attempt practice questions → review exam technique.

Study resources — 3.3 Threats to biodiversity

3.3.1

Threats to biodiversity

NotesFlashcards
3.3.2

IUCN Red List

NotesFlashcards

Ready to study Threats to biodiversity?

Get AI-powered practice questions, personalised feedback, and a study planner tailored to your IB ESS exam date.

Start studying free

Topic 3.3 Threats to biodiversity forms a core part of Unit 3: Biodiversity and Conservation in IB ESS. Mastering these concepts will strengthen your understanding of connected topics across the syllabus and prepare you for exam questions that require analysis, evaluation, and real-world application.

Frequently asked questions

What does Topic 3.3 Threats to biodiversity cover in IB ESS?
Topic 3.3 covers threats to biodiversity as part of the IB ESS syllabus. Students learn key concepts, definitions, and real-world examples that are tested in Paper 1 and Paper 2 exams.
How should I revise Threats to biodiversity for IB ESS exams?
Start by reading the micro-topic notes to understand each concept, then use flashcards to memorise key terms. Practise exam-style questions to apply your knowledge under timed conditions and review the marking criteria.
Previous topic
3.2 Natural selection, variation and speciation
Next topic
3.4 Conservation strategies
All ESS topics
Topic flashcardsExam technique

Ready to practice?

Get AI-graded practice questions, mock exams, flashcards, and a personalised study plan — all aligned to your IB syllabus.

Start Studying Free

No credit card required · Cancel anytime