Why is it easier to cool a greenhouse without plants in it than a greenhouse with plants?
What will be an ideal response?
When water transpired from the plants along with water in the root
substrate evaporates into the greenhouse air it absorbs heat from the air, thereby
cooling it.
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Figure 19-03
The accompanying figure shows a detector that uses a tank circuit tuned to the frequency of the oscillator. This type of sensor is a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
The primary consumer concerns within the biotechnology field today revolve around all of the following except:
a. environment c. cloning b. food d. forestry
What does it mean when test symbols are placed on both sides of the reference line?
What will be an ideal response?
What friction rate should be used to size a duct for a design friction rate of 0.12 in WC if the duct has a total equivalent length of 150 ft?
A) 0.12 × (150/100 ) = 0.12 × 1.5 = 0.18 in WC B) 0.12 × (100/150 ) = 0.67 × 0.12 = 0.08 in WC C) 0.1 in wc because that is the standard factor D) 0.12 in WC because the duct length is irrelevant