Which of the Following Is Not True About the Spatial

question 76

Multiple Choice

Which of the following is not true about the spatial scales at which soil scientists study soils?

• A)The smallest individual unit with which soils are described is called a soil pedon.
• B)A pedon can be about 1 to 10 square meters and deep enough (about 2 meters deep)to distinguish soil horizons.
• C)A pedon must be significantly different in properties from the pedons adjacent to it.
• D)Boundaries between different soil types on the landscape can be gradational or fairly abrupt.

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Definitions:

TOF

Stands for "Timer Off-Delay," a function in PLC programming where a timer starts counting when the input turns off.

Timer Off-delay

A timing function in control systems that keeps the output active for a predetermined time after the input signal has been turned off.

Output Coil

In programmable logic controllers (PLCs), an output coil represents a device or actuator to be controlled by the PLC's program.

TON Instruction

A timer instruction used in programming that starts timing when the input condition becomes true and continues until the set time has elapsed.