11.Which stage represents a pioneer community?
A. none (freshly plowed land) b. Annual Grasses c. various shrubs D. birch and cheery trees
E. beech-maple forest

12.The replacement of stage B by stage C and the replacement of stage C and D in a particular location is known as
A. exploitation
B. cover cropping
C. Ecological succession
D. Punctuated equilibrium

13.Which stage would best represent a climax community?
A. none (freshly plowed land) b. Annual Grasses c. various shrubs D. birch and cheery trees
E. beech-maple forest