The area where all living and nonliving features depend on each other is called the _____

A) farm
B) ecosystem
C) canopy
D) sublayer


B

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Answer the following statement(s) true (T) or false (F)

1. Valves are mechanical devices designed to control the flow of fluids. 2. A solenoid valve is a combination of three basic units. 3. Two-way solenoid valves can be used to control water, oil, and airflow. 4. The armature is also known as plunger 5. The armature is made from a high-grade copper.

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The humidistat ____ if the humidity should become too high or too low.

a. activates a sound alarm b. produces a change in color c. sets the system off d. activates a set of contacts

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The material installed above fiberglass insulation at the eave to allow air movement is called __________.

Fill in the blank(s) with the appropriate word(s).

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Carry the answer to four decimal places. If A= 0.375 inch, B=0.923 inch, C=1.0992 inches, find G

Fill in the blank(s) with the appropriate word(s).

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