H2 Biology Notes (9477, 2026): Extension B — Climate Change Impacts
Download printable cheat-sheet (CC-BY 4.0)19 Oct 2025, 00:00 Z
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Ezekiel Tan·Academic Advisor (Biology)
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Q: What does H2 Biology Notes (9477, 2026): Extension B - Climate Change Impacts cover?
A: Analyse how greenhouse emissions reshape ecosystems, food security, biodiversity, and disease vectors so you can deliver data-driven answers for the H2 Biology climate change extension topic.
TL;DR
Use this guide to connect greenhouse gas drivers, ecosystem impacts, carbon footprint comparisons, food security, biodiversity, and vector-borne disease spread-then practise explaining mechanisms from real datasets.
Status: SEAB H2 Biology (9477, first exam 2026) syllabus last checked 2026-01-12. Extension Topic B learning outcomes include greenhouse gas drivers (limited to and methane), ecosystem impacts (e.g. sea-level rise, extreme weather, stress to coral/seagrass/mangroves), carbon footprint comparisons, food supply and biodiversity risks, and mosquito-borne diseases (malaria, dengue) with Aedes aegypti as a vector example. [1]
Why this topic matters for future-facing biology
- Systems thinking: Questions integrate ecology, physiology, biotechnology, and socio-economics.
- Data analysis: Expect multi-variable datasets and graphs that require linking trends to mechanisms and evaluation language. [1]
