IB ESS SL 2.1.6 Distribution Factors Questions

Practise IB ESS SL 2.1.6 by distinguishing biotic from abiotic factors and explaining how they influence population distribution, size and density in ecosystems.

Exam points

distinguish biotic and abiotic factors with valid examples
explain how named biotic or abiotic factors affect population distribution, size or density
interpret ecosystem survey evidence to link factors with differences in populations

[Maximum number: 2]

River discharge by month in the Danube River delta

FigureA:Number of fish species breeding by month

FigureB:River discharge by month in the Danube River delta

Using Figures A and B: Number of fish species breeding by month and River discharge by month in the Danube River delta, outline the relationship between the number of fish species breeding and river discharge.

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IB ESS SL 2.1.6 Distribution Factors Questions question 1