Answer to Question 1
Ground-water chemistry tends to be different from surface-water chemistry because ground water that flows slowly underground interacts with the minerals in the aquifer materials. Ions release into the water where minerals dissolve. Changes in ground-water chemistry, temperature, or both cause mineral precipitation that cements sedimentary rocks, clogs water pipes, and forms some economically important mineral deposits of lead and zinc. Karst topography forms where ground water dissolves minerals in limestone and evaporite. Dissolution opens up spaces beneath the surface, including caverns, and causes the collapse of depressions, called sinkholes, that may capture surface drainage and make it flow underground.
Answer to Question 2
Till is the sediment deposited directly by glaciers, whereas outwash is the sediment carried away from the glaciers by meltwater streams. Till consists of a very poorly sorted, unbedded mixture of rock debris in which most of the larger cobbles and boulder are angular, scratched, and may exhibit planar, faceted surfaces. Outwash is better sorted than till, and contains bedding and cross bedding typical of river-deposited sediment. Cobbles and boulders in outwash are rounded.
From space earth shows itself as a planet covered mostly by water.
Terrestrial plants and animals can be characterized by analogous pathways for water gain and loss.
The Water Cycle
Water Hole
The CAMEO entry for chlorine. Useful information includes chemical and physical properties, personal ...
Nutrients Are Transported through the Circulatory and Lymphatic Systems Water-soluble nutrients