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CNN24 年
Lesson plan: Ecological impact of Galápagos oil spill
Editor's note: If you are planning to use the news story that this lesson plan is based on for a homework ... for the effects of oil spills on the ecological balance. Direct them to sites below ...
CNN24 年
Lesson plan: Ecological impact of Galápagos oil spill
Editor's note: If you are planning to use the news story that this lesson plan is based on for a homework ... for the effects of oil spills on the ecological balance. Direct them to sites below ...