What are three common ground-to-air rescue signals?
What will be an ideal response?
Mirror, fire, and flare
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Describe a cover crop? How is it used in erosion control?
What will be an ideal response?
Which is the first product in industrial fixation?
a. N2 c. NO3– b. NH3 d. CO(NH2)2
Match the definition with the correct term.
A. Animals that eat plant materials. B. Total amount of feed provided to an animal in a 24 hour period. C. Lack of a nutrient in an animals system. D. Device placed under the skin of an animal to deliver hormones to the animal. E. Organic compound that is the building block of protein. F. Beneficial microorganisms added to feed to improve digestion.
A full-wave rectifier uses ________ diode(s) and its output frequency is ________ the input frequency
A) two, equal to B) two, twice C) one, twice D) one, equal to