GEOgraphy test 3
____ biomes often have winter rainfall and summer drought.
Mediterranean scrub
Before photosynthesis, the ____ horizon did not exist.
O
We can estimate the density of the earth using ____.
deep rock samples and earth's mass and size
in aquatic environments, about 10-15% of eaten material is used for growth in ____.
herbivores and carnivores
Climate affects soil ____.
soil weathering soil acdity E horizon formation soil depth over time
California has all biomes except ____.
tropical rainforest
Which is true?
vegetation modifies soil development Animals modify soil development Soils modify vegetation growth
Soil distributions are highly related (correlated) to ____.
climate
____ has the most field capacity.
silt clay loam
Translocation occurs in the ____ soil horizon.
A B O E (ALL OF THESE HORIZONS)
Plants have ____ in a zone of physiological stress.
A low population
The solum is the ___.
A through B horizons
Eluviation is a strong component of ____ soil horizons
E
____ changes the soil characteristics (e.g. soil type) in a soil catena.
Water infiltration, transport and deposition
The Dust Bowl in the 1930's is understood in terms of ____.
climate, weather and land use
Species living in one habitat in a geographic realm are different from species in a similar habitat of a different geographic realm because of ____.
convergent evolution
The longest long-term storage in the carbon pool is found in the ____.
crust
Continental crust is primarily made of ____.
feldspar and silica
Carbon storage from the atmosphere to the earth's crust, plants, soil, and marine sediments requires ____.
photosynthesis
Conversion of carbon dioxide and water into sugars and oxygen involves
photosynthesis
Taiga is most likely to have ____ below it.
spodsols
Mild winters are a hallmark of many____ biomes.
temperate deciduous rainforest
Clay accumulation, but not calcium carbonate or gypsum in the B horizon is consistent with ____ formation.
Alfisols
___ developed one of the two lines separating Indomalayan and Australian zoogeographic realms.
Alfred Weber
Island species vary based on
all three answers are correct
The production of herbicides by sage to suppress other plant growth is an example of ____.
amensalism
Primary succession involves growth of ____.
annual vegetation growing on bare soil
The Moho (Mohorovicic) Discontinuity separates the ____.
crust and lithosphere
Oceanic crust is ____ than continental crust
denser and thinner
____ are associate with bogs, but not tundra.
histosols
Animals in different habitats in the same zoogeographic realm differ because of ____.
natural selection
The region within which a species operates most effectively adapted is called its ____.
niche
The nature of the solid core is studied using refraction and time delay information from ____ passing through it.
primary (P) waves
The rate of photosynthesis is influenced by ____.
relative humidity temperature recent rainfall (ALL 3 FACTORS)
________ is most permeable
sand
Soils in ____ climates are more likely to be neutral
semi-arid (steppe, BS)
____ are caused by pyroclastic flows and volcanic ash fall.
Andislols
Illuviation is common in soil horizon ____.
B
Biogeography is the combination of ____.
phytogeography and zoology
The asthenosphere is ____.
plastic
