7.1.2.1. PARAMETERS OF WATER POLLUTION

Try these first

1. 1.

   What does pH measure?

   Hint

   Think about how lemon juice compares to soap.

2. 2.

   What is the main impact of high BOD?

   Hint

   Remember decomposition consumes oxygen.

3. 3.

   What does a high BOD level indicate?

   • Low organic matter
   • High organic pollution
   • Safe water for drinking

   Hint

   Think about what this means for fish health.

4. 4.

   True or False: pH levels directly influence aquatic life.

   • True
   • False

   Hint

   Recall how different species thrive in various pH conditions.

5. 5.

   Given a scenario where a lake experiences severe algal blooms, assess the potential causes and suggest mitigation strategies.

   Hint

   Consider how agriculture and industrial waste interacts with water ecosystems.

6. 6.

   Predict the long-term ecological consequences if dissolved oxygen levels in a river drop below acceptable levels.

   Hint

   Reflect on the food chain and what happens when one link is weakened.