A plumb line is aligned _____ .
A. horizontally with the surface of the earth
B. vertically with the surface of the earth
C. horizontally with the axis of the earth
D. vertically with the axis of the earth
Answer: B
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A ____ cuts internal threads.
A. root B. crest C. tap D. die
Which one soil condition is most instrumental in fostering the process of denitrification?
a. Periods of excessive dryness b. High levels of acidity c. Periods of excessive wetness d. Extreme cold
Why are pipe threads tapered?
What will be an ideal response?
The greenhouse effect:
A. Causes the atmosphere to trap more heat energy at the earth's surface B. Is a naturally occurring process that helps to heat the earth's surface C. Affected by the burning of carbon based fuels D. All of the above statements are correct