How could cyclic lighting be used to save electricity for a crop of kalanchoe normally lighted between 10 pm and 2 am?
What will be an ideal response?
Divide the crop into 5 lighting zones. Light one zone at a time for a short
duration of perhaps 6 minutes or less. When all zones have been lighted recycle
through the zones. Continue to do so between 10 pm and 2 am.
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Which of these substances is used to pickle food?
a. fish oil c. sugar b. salt d. vinegar
Identify the two types of hair that comprise wool, where each comes from, and the function of each
What will be an ideal response?
What does a refrigeration system do with the heat in the refrigerated area?
A) It moves the heat from the refrigerated area to another area. B) It chemically absorbs the heat. C) Nothing–refrigeration is about cold, not heat. D) It overcomes the heat with a counterbalancing quantity of cold.
In selecting a heating or cooling system, undersizing is generally acceptable if it is undersized by no more
than _____. a. 5 percent b. 10 percent c. 15 percent d. 20 percent