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SAT, 13.07.2019 16:00, 87haymaker

Which group believes that different races were distinct species?

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Biology, 25.07.2019 19:30, trixxytang

Biologists have several different ways to define species. 1. according to the species concept, a species is a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring. the separation between species is maintained by isolation, which prevents gene flow between species. but in some cases, distinct species can occasionally interbreed, producing offspring. 2. alternatively, the species concept identifies species based on physical traits or body form. this species concept can be applied to species, and it is the way most of the 1.8 million named species have been identified. 3. in the species concept, species are defined by their niche--the role they play in the environment. 4. the species concept defines species as the smallest group of individuals that share a common ancestor and form one branch on the tree of life.

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Mathematics, 02.08.2019 23:30, coopera1744

Racehorse a man buys a racehorse for $20,000 and en- ters it in two races. he plans to sell the horse afterward, hoping to make a profit. if the horse wins both races, its value will jump to $100,000. if it wins one of the races, it will be worth $50,000. if it loses both races, it will be worth only $10,000. the man believes there’s a 20% chance that the horse will win the first race and a 30% chance it will win the second one. assuming that the two races are independent events, find the man’s expected profit.

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Business, 30.10.2019 20:31, fdzgema17

Aman buys a racehorse for $20,000 and enters it in two races. he plans to sell the horse afterward, hoping to make a profit. if the horse wins both races, its value will jump to $100,000. if it wins one of the races, it will be worth $50,000. if it loses both races, it will be worth only $10,000. the man believes there’s a 20% chance that the horse will win the first race and a 30% chance it will win the second one. assuming that the two races are independent events, find the man’s expected profit.

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