About how many billions of trees are planted in the U.S. each year?

A) ten
B) five
C) three
D) two


D

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A receiver is tuned to 1 GHz transmission and receives signals with Doppler frequencies ranging from 10 Hz to 50 Hz when moving at a speed of 80 km/hr. What is the fading rate?

What will be an ideal response?

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Control circuits are generally drawn as standard ____.

A. logic diagrams B. lines of code C. truth tables D. schematic or ladder diagrams

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Pecan trees have a chilling requirement of _____ hours below 45ºF (7ºC)

A) 75 B) 95 to 125 C) ?150 to 250 D) more than 300

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Describe the concept of energy balance as it relates to alternate energy.

What will be an ideal response?

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