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 1 7,950 year 2 3,460 year 3 1,380 a. 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%