Tropical Marine Ecology and Tropical Ecosystems of Costa Rica Discussion Topic Feedback

The earth's axis of rotation wobbles like a spinning top. There are two periods (a wobble within a wobble): 19,000 AND 1.72 3,000 years. Precession has a profound effect on the earth's climate.

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Tropical Ecosystem Field Course Syllabii

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Course Syllabus 2000: Tropical Marine Ecology of the Florida Keys, Everglades and the Bahamas

Course Syllabus 2000: Tropical Ecosystems of Costa Rica

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