Define wetland, both from legal and ecological perspectives
What will be an ideal response?
The U.S. Army Corps of Engineers defines wetland as an area that has frequent flooding or saturation, is covered
by hydrophytes, and includes hydric soils. According to this definition, wetlands exhibit all three of these characteristics:
(1) a wet hydrology, (2) hydrophytes, and (3) hydric soils.
The U.S. Fish and Wildlife Service defines wetlands as land that is transitional between terrestrial and aquatic
systems where the water table is usually at or near the surface or the land is covered by shallow water. Under that
definition, wetlands must have one or more of the following three attributes: (1) supports predominantly hydrophytes
at least periodically, (2) substrate is predominantly undrained hydric soil, or (3) substrate is nonsoil and
saturated with water or covered by shallow water at some time during the growing season each year.
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Most materials that are good electrical conductors:
A) Will transfer heat by convection, but not by conduction. B) Will transfer heat by radiation, but not by conduction. C) Also tend to make good thermal conductors. D) Are poor thermal conductors.
The __________ is the difference between the condition of the controlled variable and the set point.
A. measured variable B. feedback signal C. error signal
A Rotary Variable Differential Transformer (RVDT) has a specification on ranges and sensitivities.
Range ±30degrees, linearity error ± 0.5% full range Range ±90degrees, linearity error ±1.0% full range. Sensitivity 1mv/v input per degree What is the error reading in 50 degrees due to non linearity, if the RVDT is used in the ±90 degrees range? What will be an ideal response?