Answers 100% Pass
Dimensions of the Earth - ✔✔Diameter: 8000 mi
Circumference: 25,000 mi
What do the definitions of soil depend on? - ✔✔The definition of soil is dynamic
because many specializations and disciplines view soil differently: ecological,
geological, environmental, etc.
Parameters related to soil composition for an idealized surface soil - ✔✔50% pore space
and 45% particles, 5% OM
Basic functions of soils in the environment - ✔✔Medium for plant growth: support, gas
and water exchange, temperature control, nutrient storage and release.
Regulator for water supplies: infiltration, runoff, storage, movement, purification.
The 4 basic processes involved in soil formation - ✔✔Additions, losses, transformations,
translocations
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, Basics of weathering - ✔✔Critical to Soil Formation, Physical and Chemical Alteration
and Reorganization of Rocks and Minerals. Critical in the Creation of the Parent
Material and
Alteration of Parent Material to Secondary Components.
5 soil forming factors - ✔✔Parent material, climate, organisms, relief (topography), and
time
Type of parent material that dominates Florida's soils - ✔✔Loamy marine sediments;
Sandy and clayey marine and alluvial (deposited by rivers and streams) deposited over
limestone bedrock; Mostly calcium and magnesium carbonates from original ocean
species like corals and mollusks
What is the origin of the sediments that ultimately formed the parent materials for
Florida soils? - ✔✔An influx of continental sediments began about 25 mya; the
sediments were shed from the Appalachian mountains by the lowering sea levels
How do rainfall and temperature impact soil formation? - ✔✔Increased temperature
and rainfall both accelerate soil formation.
High temperatures increase the rate of physiological processes (microbial activity,
organisms) while water increases the rate of weathering and translocation, ultimately
increasing the rate of transformation.
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