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• read changes on earth and changes in life. explain how changes in earth’s systems affected the growth of life on earth. use evidence from the text to support your answer.
  
• you are going to hear about sonia martínez and her career as a chef. complete the missing information (time and verbs in the preterite) based on what you hear. ¡ojo! when your answer includes a number, you must spell it out rather than writing the numeral.
  
• which best describes what occurs when an object takes in a wave as the wave hits it? transmission absorption reflection refraction
  
• the best method to improve air quality is to _______. a. use technology to reduce the pollutants in air b. produce less pollution c. produce less pollution and use technology to reduce the pollutants in air d. better utilize land and technology to prevent pollution
  
• which of the following is the best summary of nixon’s thinking as presented in this passage? “it is harmful to contest an effort to remove a president from office.” “resigning from the office of president is not constitutional.” “it is important to fight attempts to remove a president, but i have lost that fight.”
  
• what was the impact of the industrial revolution on the concept of dual federalism?
  
• regular physical activity can help prevent disease by __________. a. controlling weight b. controlling blood pressure c. improving cardiorespiratory fitness d. all of the above
  
• which of these definitions could be used to define h2o as an acid? check all that apply. arrhenius concept bronsted-lowry concept lewis concept
  
• complete the paragraph to name a cause for the cuban missile crisis. the soviet union states that it was placing weapons in cuba to ensure that cuba would be safe from another us invasion like . the united states did not like the number of being transported to cuba, but if the weapons were defensive, they could not be considered an act of aggression.
  
• a supervisor spends a day inspecting a nuclear plant for potential radiation leaks. she has to move throughout the plant inspecting all the equipment and machinery. she needs to take two different radiation detection devices to help ensure her safety and to find radiation leaks. she needs the results immediately. which two devices would be the best choices for the task? geiger counter and scintillation counter geiger counter and cloud chamber cloud chamber and scintillation counter film badge and scintillation counter