In a tropical rain forest, microbial decomposition of soil residues is least important in controlling the plant-availability of the following nutrient?
a. Carbon
b. Phosphorus
c. Nitrogen
d. Sulfur
Ans: a. Carbon
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Answer the following statement(s) true (T) or false (F)
1. A heat pump provides both heating and air conditioning within the same unit. 2. The two-stage thermostat is a thermostat that contains one mercury contact and one zinc contact. 3. The sequence timer is an on-delay timer used to connect the heating elements to the line all at once. 4. The terminal board shows terminal connections marked inside hexagon-shaped figures. 5. Terminal identification is used to simplify a schematic diagram.
Voltage drop is a better measurement of resistance than testing static resistance because _______
A) The resistance specification for the component is not required for diagnosis B) Current flow creates heat which adds to circuit resistance C) Both A and B D) Neither A nor B
Cylinder taper and out of round should be measured _______
A) Near the bottom of piston travel B) Just below the ridge C) Both A and B D) Neither A nor B
The VIN identification for model year follows a pattern that repeats every ________ years
A) 24 B) 30 C) 12 D) None of these