In this wooded region that was once pasture, a mature forest of towering oaks and hickory trees eventually takes over.
However, change is still apparent, as a large patch of young shrubs and small trees are growing where several large trees were toppled by a storm several years ago. Collectively, this wooded region represents A) a climax ecosystem with periodic natural disturbances.
B) primary succession.
C) a sustained biome.
D) a microclimate.
Question 2
The concern about human-to-human transmission of avian and swine flu is most closely monitored by
A) the national governments of the countries of the world.
B) the World Health Organization and the Centers for Disease Control and Prevention.
C) World Wide Institute for Infectious Disease.
D) International Centers for Health and Human Disease.
The small-scale distribution of different tree species in a Douglas-fir forest is determined by both
Rooted trees from unrooted trees
Bright Trees
Region’s Culture in International Context
Phylogenetic trees (Cladograms)
Klamath–Siskiyou Forest, a Critical Ecoregion