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• the geographic isolation of two populations of a species tends to increase differences between their gene pools because it
  
• which best states how brazil gained independence? brazil gained independence by inspiring colonists to revolt. brazil gained independence through the leadership of bolívar. brazil gained independence with assistance from other countries. brazil gained independence in a largely peaceful revolution.
  
• which two themes are expressed in this excerpt? growing up can be lonely and painful. tears are a sign of weakness. growing up can be lonely and painful. wise friends are a life-long treasure. appearances are deceiving. fire is a dangerous power. fire is a dangerous power. wise friends are a life-long treasure.
  
• select the correct answer. ron and nick chose to start their own businesses. ron wanted to start an ice cream shop, and nick wanted to launch a television manufacturing company. ron and nick had equal amounts of funds on hand and no government regulations restricting them. months later, however, ron has already set up his business, while nick is still struggling to raise additional funds to build a factory. what was the main factor that affected nick’s business? a. an irrelevant business idea b. low demand for tvs in his country c. high start-up costs d. lack of labor
  
• lionel explores electromagnetic induction using the procedure shown. 1. move the magnet quickly into the right end of a solenoid. 2. hold the magnet in the solenoid for 3 s. 3. move the solenoid slowly to the left away from the magnet. what should lionel observe during his investigation? a large current forms, drops to zero, then remains at zero. a large current forms, drops to zero, then a smaller current forms in the opposite direction. a large current forms, drops to zero, then a smaller current forms in the same direction. a small current forms, drops to zero, then a larger current forms in the same direction.
  
• the probability that roger wins a tennis tournament (event a) is 0.45, and the probability that stephan wins the tournament (event b) is 0.40. the probability of roger winning the tournament, given that stephan wins, is 0. the probability of stephan winning the tournament, given that roger wins, is 0. given this information, which statement is true? a. events a and b are independent because p(a|b) = p(a). b. events a and b are independent because p(a|b) ≠ p(a). c. events a and b are not independent because p(a|b) ≠ p(a). d. events a and b are not independent because p(a|b) = p(a).
  
• on a coordinate plane, solid circles appear at the following points: (negative 4, 2), (negative 2, 2), (negative 1, 4), (1, 1), (1, 3), (2, negative 3). which ordered pair could be removed from the graph to create a set of ordered pairs that represents a function? (–4, 2) (–1, 4) (1, 3) (2, –3)
  
• the soviet union adopted this new flag in 1923. a flag is shown that is entirely in red except for a hammer and sickle with an open star above them. these symbols are in yellow and appear in the uppercase left corner of the flag. what do the hammer and sickle represent on the flag? workers and peasants landowners and factory bosses the soviet republics the shape of soviet russia
  
• which character trait is necessary for a person to be in a healthy relationship? respectful outgoing ambitious determined
  
• which of the following best describes how the articles of confederation divided government power? as a one-branch federal government with three basic powers as a three-branch federal government with one basic power as one-branch state governments with three basic powers as three-branch state governments with one basic power