Systems (DP IB Environmental Systems & Societies (ESS): SL): Exam Questions

Identify the type of system shown in the figure below:

Define the term transformation in the context of environmental systems.

State one example of a transformation that occurs in the hydrological cycle.

In system diagrams, state what is represented using shapes with defined boundaries (such as a circle or rectangle).

In system diagrams, state what is represented using arrows.

Below is an example of a stable equilibrium.

Identify the name of this type of stable equilibrium.

Below is an example of a stable equilibrium.

Identify the name of this type of stable equilibrium.

When a population is exposed to a disease, some individuals will be more resistant to the disease than others. Those individuals who are more resistant to the disease will be more likely to survive and reproduce. This will lead to an increase in the proportion of resistant individuals in the population. As the proportion of resistant individuals in the population increases, the disease will have a harder time spreading. This is because there are fewer susceptible individuals for the disease to infect. This will lead to a decrease in the prevalence of the disease in the population.

Identify the type of feedback being demonstrated in this example.