Ecology

A. natural selection
B. artificial selection
C. common selection
D. All

A. dendroica castanea
B. D.tigina
C. D.fusca
D. D.coronata

A. co existence competition
B. interspecific competition
C. intraspecific compition
D. inner competition

A. virus
B. parasite
C. bacteria
D. disease

A. density
B. energy
C. capacity
D. activity

A. individual type II
B. Individual type I
C. individual type III
D. curve

A. slow
B. low
C. high
D. normal

A. y axis
B. x axis
C. z axis
D. w axis

A. population
B. community
C. species
D. all

A. watery environment
B. dry environment
C. heated environment
D. cold environment