A)plant distributions in a given region.
B)mutual benefits between organisms at all scales in a region.
C)the relationship between abiotic and biotic factors.
D)how groups of species interact in the same place at the same time
E)global scale influences of major disturbances such as volcanos.

A)Old orange groves in FloridA.
B)Redwood forests along the northwestern U.S.coast.
C)Volcanoes in Iceland.
D)Shallow seas with low productivity.

A)tolerance.
B)climax succession.
C)inhibition.
D)facilitation.
E)mutualism.