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Pollution - Air, Water

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A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

Air Pollution
What is air pollution?
Learn how greenhouse gases, smog, and toxic pollutants effect climate change, and human health.

What Is Water Pollution?
Pesticides and Biological Control
How do we avoid using pesticides?

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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