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Population and the Environment

Physical Environment and Disease

  • 1 thing to know
  • Component 2

Overview

Recall questions on how climate, topography and poorly drained low-lying land affect disease, on air pollutants, their sources and the health conditions linked to them, and on water quality and the diseases it causes.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Key term

What health conditions are linked to poor air quality?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Explain how climate influences disease incidence.

    Model answer

    Temperature and precipitation affect pathogen survival, vector breeding and human exposure patterns.

  2. 2

    How does topography affect disease distribution?

    Model answer

    Drainage patterns influence standing water availability for vector breeding and waterborne pathogen transmission.

  3. 3

    Why do low-lying areas with poor drainage have higher disease vector populations?

    Model answer

    Poor drainage creates stagnant water bodies that serve as breeding sites for disease vectors such as mosquitoes.

  4. 4

    Name four air pollutants that affect respiratory health.

    Model answer

    Particulate matter, ground-level ozone, nitrogen dioxide and sulphur dioxide.

  5. 5

    What health conditions are linked to poor air quality?

    Model answer

    Respiratory diseases, cardiovascular disease, lung cancer and reduced life expectancy.

  6. 6

    Identify four sources of air pollution that affect human health.

    Model answer

    Vehicle emissions, industrial processes, domestic fuel burning and agricultural activities.

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China and .
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AThe horns have less sand volume, so they move more quickly.
BSand is transported up the gentle windward slope via saltation.
CSand accumulates at the crest.

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Weathering means breakdown of rock in place.
TrueFalse

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