In 1990, eight deer were released on Island R, which had no deer and no large predators. Deer eat the leaves and twigs of shrubs. Biologists counted the deer and measured the percent of the island covered by shrubs every five years. The table shows their data.
Table of the deer population and the percent of Island R covered by shrubs, every five years from 1990 to 2020. 1990: 8 deer, 80% shrub cover. 1995: 30 deer, 78%. 2000: 120 deer, 70%. 2005: 560 deer, 42%. 2010: 240 deer, 28%. 2015: 290 deer, 33%. 2020: 300 deer, 35%.