Source: Council on Environmental Quality, 20th Annual Report 1990, Washington, D.C. p. 490
The above table shows how many of each type of species was endangered in the given years during the 1980s. The figures are for the United States only.
The most clear, and perhaps concerning, statement that the statistics make is that the total number of endangered species rose greatly from the beginning of the decade to the end.
Plants and fish were the most common to become endangered. This is in part because there are so many species of them, and because they can be easily threatened by