Carlesguerraviz Carlesguerraviz Science Answered choose the letter of the correct answer . write your answer in your answer sheet .kasunod po ng 19 2019. where is the racing most useful ?A. in mountain sidesB. near river banks C. in flat lands D. near cities20. which method breast prevent soil erosion in high and steep mountains ? A. terracingB. building dikes C. contour plowing D. placing windbreakers