Select the correct answer from the drop-down menu.
Read the excerpt from the text.
(2) Tallgrass prairies are an extremely complicated web of life. At first sight, one sees a landscape dominated by grasses.
Eighty percent of the foliage is indeed made up of grasses, from 40 to 60 different species. The other 20% of the primary
vegetation is made up of over 300 species of forbs or flowers. The prairie also has over 100 species of lichens and
liverworts as well as numerous species of woody trees and shrubs along creeks and protected areas.
What is the central idea of this excerpt?
The central idea of this excerpt is that prairies
are complex and should be protected.
contain a large diversity of plant life.
are mostly made up of grasses.
contain more flowers than lichens.