How do dunes build their characteristic asymmetrical profile? What will be an ideal response?
Most dunes have an asymmetrical profile with a gentle windward slope and a steeper leeward slope
that is included in the direction of the prevailing wind. Sand grains move up the gentle windward slop
by saltation and accumulate on the leeward side, forming an angle of 30 to 34 degrees from the
horizontal, which is the angle of repose of dry sand. When the angle is exceeded by accumulating
sand, the slope collapses, and the sand slides down the leeward slope, coming to rest at its base. As
sand moves from the dune's windward side and then slides down the leeward slope, the dune migrates
in the direction of the prevailing wind.
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Describe the main abiotic ecosystem components. Give at least two regional examples of how these elements combine to form ecosystems
What will be an ideal response?
Water can dissolve so many substances that it has been called the ________________
Fill in the blank(s) with correct word
Cow belching results in the release of methane, a greenhouse gas
Indicate whether the statement is true or false
The French long-lot system was developed primarily because of
A) collective land ownership. B) common grazing land. C) inheritance laws. D) need for access to a river. E) long distance between farms.