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Pollution - Land, Sea

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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.

Changes on Land
Realize the many ways in which humans affect the Earth system, including other living things on Earth.

Gulf Oil Spill Effects On Wildlife
What are and will be the effects of the Gulf of Mexico oil spill on the wildlife in the area?

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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