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OCR: Learning Extra Relationships Animal Interdependencies (page 1 of 4) Play an interdependency game. DESCRIPTION Tropical forests cover only about 6% of the Earth's surface and yet they house between 50-80% of our planet's estimated 30 million plant and animal species. The key this tremendous species richness lies ir the stability of the tropical farests themselves where climactic conditions have remained relatively constant for 60 million years Sophisticat ted plant and animal adaptations, developed through natura selection, allowed for diversification into highly specialized niches OUTCOME The student should be able to identify and descri ibe adaptations that are important to an indivi idual species role in the community: infer the consequences of altering population sizes within tropical f ...