2.4.2—Biome definition
- Syllabus
- First assessment 2026
- Objective
- 2.4.2
- Level
- SL
Recognize a Biome by Its Climate Pattern
A biome is a broad ecological pattern shaped mainly by similar temperature and precipitation, even across different continents.
Climate limits water, energy and growing season; insolation helps set heating. Use climate first, then expect local soils, disturbance and species history to modify the community.
Two distant regions with warm temperatures and high year-round rainfall can both support rainforest, despite different species.
A biome groups many local ecosystems sharing broad climate constraints.
Biome boundaries are not exact lines; they are broad patterns, not one uniform community.