Pollution and Human Impact

What is water pollution?

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Sometimes we can see pollutants in water - such as floating trash. What pollutants might you not "see" in water but are dangerous to living things?

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Sometimes human waste makes its way in waterways. How does this negatively impact aquatic environments?

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How does agriculture have both positive and negative effects on living things? How is it beneficial to humans? How can agricultural activities contribute to water pollution?

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Humans depend on water from various sources for different reasons. All of these sources are polluted or could be polluted to some extent. Of the following sources, which should humans be most concerned about: lakes, rivers and streams, ocean or groundwater? Explain.

Developed countries have water treatment plants that filter and clean water that is used for human consumption. What could happen if these countries did not have such facilities?

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What is air pollution? Give at least two examples of air pollutants.

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What is smog? What is the source of the pollution that contributes to smog?

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What human activities can increase the number of air pollutants in the atmosphere?

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People may think an individual cannot do anything to reduce air pollution significantly. However, if every individual makes an effort, collectively the impact of individuals is great. What are things YOU could do to help reduce air pollution? Identify three changes you could make to your behavior or way of life and explain how these changes would positively affect the environment.

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