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weathering (river basins (A river basin is the portion of land drained by…
weathering
river basins
A river basin is the portion of land drained by a river and its tributaries. It encompasses all of the land surface dissected and drained by many streams and creeks that flow downhill into one another, and eventually into the Milwaukee River
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pollution
Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.
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acid precipitation
Any form of precipitation, including rain, snow, hail, fog, or dew, that is high in acid pollutants, especially sulfuric and nitric acid. Acid precipitation has a pH of less than 5.6 
chemical weathering.
the erosion or disintegration of rocks, building materials, etc., caused by chemical reactions
ph scale
In chemistry, pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution. It is approximately the negative of the base 10 logarithm of the molar concentration, measured in units of moles per liter, of hydrogen ions
erosion
the process of eroding or being eroded by wind, water, or other natural agents.
soil
the upper layer of earth in which plants grow, a black or dark brown material typically consisting of a mixture of organic remains, clay, and rock particles.
sand
Sand is a granular material composed of finely divided rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type
silt
fine sand, clay, or other material carried by running water and deposited as a sediment, especially in a channel or harbor.
clay
Clay is a finely-grained natural rock or soil material that combines one or more clay minerals with possible traces of quartz, metal oxides and organic matter
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water table
The water table is the upper surface of the zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with water.
zone of saturation
The phreatic zone, or zone of saturation, is the area in an aquifer, below the water table, in which relatively all pores and fractures are saturated with water. The phreatic zone defines the lower edge of the vadose zone
zone of aeration
Groundwater is all the water that has penetrated the earth's surface and is found in one of two soil layers. The one nearest the surface is the "zone of aeration", where gaps between soil are filled with both air and water.
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infiltration
In hydrology and soil science, infiltration is the process by which water on the ground surface enters the soil. Infiltration rate is a measure of the temporal rate at which soil is able to absorb rainfall or irrigation. It is most often measured in millimetres per hour or inches per hour
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watersheds
an area or ridge of land that separates waters flowing to different rivers, basins, or seas.
geohazards
A geohazard is a geological state that may lead to widespread damage or risk. ... Geohazards can be relatively small features, but they can also attain huge dimensions
landslides
A landslide is defined as the movement of a mass of rock, debris, or earth down a slope. Landslides are a type of "mass wasting," which denotes any down-slope movement of soil and rock under the direct influence of gravity.
tsunamis
a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
sinkholes
Sinkholes are cavities in the ground that form when water erodes an underlying rock layer. Two types of sinkholes exist. One forms when the roof of a cave collapses and exposes the underground cavern.
porosity
Porosity is the quality of being porous, or full of tiny holes. Liquids go right through things that have porosity. Go back far enough and you'll find that porosity stems from the Greek word poros for "pore," which means “passage.” So something with porosity lets things through.
barrier islands
a long narrow island lying parallel and close to the mainland, protecting the mainland from erosion and storms.
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expansion of water when it is converted to ice. Cracks filled with water are forced further apart when it freezes.
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