____________________ balance refers to the balance nature has regarding the number of living things in a given area.
Fill in the blank(s) with the appropriate word(s).
Ecological
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For floating structures that are installed to rise and fall in response to the water level on a natural or manmade body of water, the electrical datum plane is 30 inches (76.2 cm) above the point at which the floating structure touches the water. What is the minimum distance of the electrical datum plane above the deck level of the structure?
a. 12 inches b. 15 inches c. 20 inches d. 35 inches
Before becoming president of Russia, Vladimir Putin served in which Soviet agency?
a. the KGB b. the Red Army c. the Soviet Air Force d. the Supreme Soviet
Properties of matter that determine how chemicals react to one another:
A) Are known as physical properties of matter. B) Are tested in pressures above atmospheric. C) Are known as chemical properties of matter. D) Are tested in pressures below atmospheric.
Electrical charge (Q) is measured in ____.
A. volts B. ohms C. coulombs D. amperes