IB ESS HL 5.2.4 Agricultural system variation Question Bank
Practise IB ESS SL/HL 005.002.004 by applying agricultural system variation concepts to exam-style environmental systems questions.
- Syllabus
- First assessment 2026
- Course
- ESS HL
- Level
- HL
Practise IB ESS SL/HL 005.002.004 by applying agricultural system variation concepts to exam-style environmental systems questions.

Figure Dam storage, urban and agricultural water use, and rainfall in the Western Cape, 2014-2018
Outline one reason for the variation in agricultural water use, as shown in Figure.
Outline one reason for the variation in agricultural water use as shown in Figure.
a. more water is needed when rainfall is low / less water is extracted when it rains;
b. more water is needed when (monthly) temperatures are higher (as shown in Figured) due to increased evaporation from soil/plants;
c. (plants require more water when they are growing, so) the greater water use is during the growing season / plants require more water during photosynthesis;
Note: BOD if incorrect season but an appropriate reason is given.