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Which of the following, like HIV, is an RNA virus that is constantly changing its appearance and adept at eluding recognition by the human immune system?
Geographic Region
A specific area or division on the Earth's surface characterized by unique physical, political, or cultural traits.
Projects
Unique, temporary endeavors undertaken to create a product, service, or result with specific objectives that must be accomplished within set parameters of time, budget, and resources.
Products
Goods or services offered by a company to customers.
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