Questions and Answers
What is the primary source of water pollution according to the given information?
Domestic waste water and sewage
What happens to most of the sewage before it is discharged?
It receives no treatment
What type of materials are commonly found in domestic waste water and sewage?
Common organic materials
What is a potential consequence of discharging untreated sewage into the environment?
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Why is it important to address the issue of domestic waste water and sewage?
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What is a characteristic of the atomic nuclei of radioactive elements like uranium and radium?
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During nuclear tests, where does the radioactive dust often reach?
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What happens to the radioactive dust that encircles the globe during nuclear tests?
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What is a consequence of nuclear tests on the environment?
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Why are radioactive elements like uranium and radium a concern?
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