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If the mitosomes of Giardia contain no DNA, yet are descendants of what were once free-living organisms, then where are we likely to find the genes that encode their structures, and what accounts for their current location there?
Mortality Rates
A measure of the number of deaths in a given population, scaled to the size of that population, per unit of time.
Concentric Zone Model
A social and urban planning model that divides cities into circular zones with distinct characteristics, originally developed by Ernest Burgess.
Industrial Cities
Urban centers that developed during the Industrial Revolution, characterized by the significant presence of manufacturing and industry.
Twentieth Century
The period extending from January 1, 1900, to December 31, 1999, marked by significant technological, social, and political changes worldwide.
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