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• which statement best describes how african americans in the south contributed to the union war effort? african americans left the south for border states. african americans staged work slowdowns. african americans provided nursing care. african americans stayed and continued to work hard.
  
• tennis is classified as an exercise program. please select the best answer from the choices provided. t f
  
• which statement about entrepreneurs is true? a. they never need to create opportunities for their business. b. their interpersonal skills do not matter much for their business’s success. c. they should take advice from experts if they lack knowledge about certain aspects of their business. d. they should never choose to run a business based on their personal work preferences. e. although they need to be persuasive, they do not need to be persistent.
  
• which building project best reflects the ming dynasty's shift toward isolationism?
  
• it is easy to classify people into clear-cut racial categories. please select the best answer from the choices providedtf
  
• how are littoral and riparian zones different? a. littoral zones contain vegetation, while riparian zones do not. b. littoral zones have greater access to sunlight than riparian zones. c. riparian zones are more important to aquatic animals than littoral zones. d. riparian zones occur where water meets land, while littoral zones occur at depths of less than 15 feet.
  
• jessica’s credit card is on a 30-day billing cycle, and it computes finance charges using the adjusted balance method. the following table details jessica’s use of her credit card in the month of october. date amount ($) transaction 10/1 1,240.55 beginning balance 10/2 36.43 purchase 10/10 75.00 payment 10/13 131.79 payment 10/20 41.52 purchase 10/22 25.00 purchase what is jessica’s adjusted balance for october? a. $1,136.71 b. $1,033.76 c. $1,140.55 d. $1,240.55
  
• a sample originally contained 1.28 g of a radioisotope. it now contains 1.12 g of its daughter isotope. how many half-lives have passed since the sample originally formed? 3 4 8 16
  
• what obstacles do skyscrapers face as they get taller? how do designers avoid these obstacles?
  
• which of the following should be included in a watershed map to best determine the non–point source of a pollutant, such as fertilizer, found in a river?