1. Tina is studying the disadvantages of metals in water. She knows that certain metals are toxic. Which of the following is a toxic metal that can contaminate water?
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Ch 12
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2. George is learning about water pollution. He knows that plastics are a major pollutant in water bodies. What is a disadvantage of plastics in water?
3. Xia is learning about the treatment of domestic water. She knows that sedimentation allows particles to settle. What is the purpose of sedimentation?
4. Rachel is studying waterborne diseases. She knows that jaundice is a waterborne disease. What is the cause of jaundice?
5. Which salt causes temporary hardness?
6. Oliver is learning about waterborne diseases. He knows that typhoid is a waterborne disease. Which of the following is also a waterborne disease?
7. Quinn is studying water scarcity in Pakistan. He learns that population growth is a major factor. How does population growth contribute to water scarcity?
8. Pure water has a pH value of:
9. Dissolved oxygen in water is essential for:
10. Victor is studying the quality of water from natural resources. He knows that groundwater is often cleaner than surface water. What is a disadvantage of groundwater?