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The Brazil nut tree, Bertholletia excels (n = 17) , is native to tropical rain forests of South America. It is a hardwood tree that can grow to over 50 meters tall, is a source of high-quality lumber, and is a favorite nesting site for harpy eagles. As the rainy season ends, tough-walled fruits, each containing 8-25 seeds (Brazil nuts) , fall to the forest floor. Brazil nuts are composed primarily of endosperm. About $50 million worth of nuts are harvested each year. Scientists have discovered that the pale yellow flowers of Brazil nut trees cannot fertilize themselves and admit only female orchid bees as pollinators. The agouti (Dasyprocta spp.) , a cat-sized rodent, is the only animal with teeth strong enough to crack the hard wall of Brazil nut fruits. It typically eats some of the seeds, buries others, and leaves still others inside the fruit, which moisture can then enter. The uneaten seeds may subsequently germinate.
-The harpy eagle, Harpia harpyja, is the largest, most powerful raptor in the Americas. It nests only in trees taller than 25 meters. It is a "sloth specialist," but will also kill agouti. Thus, if these eagles capture too many agoutis from a particular locale, they might contribute to their own demise by
Fundamental Attribution Error
The tendency to overestimate personality or dispositional factors and underestimate situational influences when explaining the behavior of others.
Slacking Off
The act of reducing effort or avoiding work altogether.
Cognitive Dissonance
The psychological distress felt when an individual has two or more opposing beliefs, ideas, or values at the same moment.
Attribution Theory
The theory that we explain someone’s behavior by crediting either the situation or the person’s disposition.
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