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Mariana has a preference for exquisite handcrafted jade ornaments imported from Japan.She displays her possessions at social gatherings and feels proud when her friends compliment her on the same.When approached by her friends for the source of these ornaments she indirectly refuses to reveal it by diverting the conversation to other things.She feels that once her friends start purchasing similar ornaments the exclusivity of her collection will be lost.Explain Mariana's behavior within the context of the demand theory.
Echinoderm
A phylum of marine animals known for their radial symmetry and unique water vascular system, including starfish and sea urchins.
Evolutionary Relationships
The connections among different species or organisms that can be traced back to a common ancestor, explored through genetics, physical characteristics, and other biological data.
Amniotes
Terrestrial vertebrates: reptiles, birds, and mammals; animals whose embryos are enclosed by an amnion.
Lungfish
A type of freshwater fish with the unique ability to breathe air using lungs, allowing them to survive in habitats with low oxygen levels.
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