IB ESS HL 7.1.5 Ecosystem Services Questions
Practise IB ESS HL 7.1.5 by applying ecosystem services concepts to environmental systems questions.
- Syllabus
- First assessment 2026
- Course
- ESS HL
- Level
- HL
Exam points
- identify life-supporting ecosystem services such as oxygen production and habitat
- explain water replenishment, flood/erosion protection and pollution mitigation services
- explain carbon sequestration and climate regulation by ecosystems
IB ESS HL 7.1.5 Ecosystem Services Questions question 1
[Maximum number: 1]
Outline one ecological service provided by the Siberian taiga.
provides habitat for animals/birds;
(photosynthesis) acts as a carbon sink/absorbs CO2 reducing greenhouse emissions;
(photosynthesis) releases O2 necessary for living organisms;
filters water / maintains water table;
cools/moistens climate through evapotranspiration / source of moisture for precipitation;
vegetation prevents soil erosion;
increases/maintains biodiversity (increasing/maintaining resilience of biosphere);
pollination of plants/crops;
Do not accept only 'photosynthesis'.
Do not accept provision of goods eg timber/food.
Do not accept cultural, intrinsic or aesthetical benefits eg spiritual/tourism/recreation.
For credit response must focus on ecological service/function.
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