Question 1
Question detail
Explain why the presence of harmful microbes in sewage is a concern for public health.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
Explain why the presence of harmful microbes in sewage is a concern for public health.
Answer
Harmful microbes in sewage can cause diseases and infections when they contaminate drinking water or come into contact with humans. Effective treatment of sewage is essential to eliminate these microbes and protect public health.
Explanation
A strong answer should directly address the approved learning objective to describe sewage as waste water that contains organic matter and harmful microbes. This question belongs to Waste water treatment within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to microbes, and keeps the wording specific to AQA GCSE revision.
Common mistake
Confusing Sewage with Other Waste Types
Students often confuse sewage with other types of waste water, failing to recognize that sewage specifically contains organic matter and harmful microbes.
Do not treat this as a general statement about microbes. Instead, answer by clearly linking the correction to describe sewage as waste water that contains organic matter and harmful microbes in Waste water treatment. This keeps the response inside Using the Earth's resources and obtaining potable water and prevents a vague or off-topic GCSE answer. The mistake to avoid is: students often confuse sewage with other types of waste water, failing to recognize that sewage specifically contains organic matter and harmful microbes.
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