Agroup of scientists studied the invasion of a species in an area and its effect on the population of a native species. study the given data and determine the percent decrease in the native species population between years 1 and 2 and years 2 and 3.population of native species year 17,950year 23,460year 31,380n. 49.6% and 55.3%b. 56.5% and 60.1%c. 52.5% and 63.3%d. 50.4% and 68.9%e. 54.3% and 67.6%