1.	How many plant species are currently classified as endangered? Over 5,000 Over 11,450 Over 19,000 Over 25,500
2.	Where is the endangered species crisis most severe? the Sahara desert temperate forests tropical rainforests the world's oceans
3.	The number of existing species on earth today is: between 1.4 and 1.7 million 4 or 5 million more than 10 million not exactly known
4.	The smallest unit of classification is: species genus family order
5.	In what year was the Endangered Species Act enacted in the United States? 1973 1976 1983 1989
6.	Who wrote a book on the origin of species? Alfred Russel Charles Darwin John Galapagos Francis Bacon
7.	What is one of the most important reasons to preserve endangered or unknown species? They taste good They are nice to look at They can be used to make medicines They would make cool pets
8.	Would extinction occur if mankind didn't cause it? yes no
9.	Who discovered penicillin? Francis Crick Alexander Fleming Louis Pasteur Marie Curie
10.	____% of our modern pharmaceutical medicines are derived from plants or animals. 10 40 60 80