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The Brown Rat Can Breed Year-Round, with a Female Producing

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The brown rat can breed year-round, with a female producing five litters of 7 to 14 offspring per year.Rats reach sexual maturity in about five weeks, and a rat population can increase by ten times in 15 weeks.The maximum lifespan is three years, and the yearly mortality rate is about 95 percent.In terms of life history strategy, brown rats can be said to be _______.

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