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D4.2.2—Requirements for stability in ecosystems


Here are experiments our science specialists have selected to support this IB* topic.

The Effect of Acid Deposition on Aquatic Ecosystems

Experiment #31 from Investigating Environmental Science through Inquiry

In Part I of the Preliminary Activity, you will use a pH Sensor to monitor pH as dilute sulfuric acid is added drop wise to a water sample.

General water hardness is related to the dissolved minerals in the water. In Part II of the Preliminary Activity, you will use a Conductivity Probe to determine the conductivity of water from the same source.

After completing the Preliminary Activity, you will first use reference sources to find out more about acid deposition before you choose and investigate a researchable question dealing with acid deposition.

Educational Standard
International Baccalaureate (IB) 2025
D Continuity and change
Level of organization
4 Ecosystems
D4.2 Stability and change
Standard level and higher level

* The IB Diploma Program is an official program of the International Baccalaureate Organization (IBO) which authorizes schools to offer it. The material available here has been developed independently of the IBO and is not endorsed by it.