Which of the following would occur when lime is added to the surface of a soil at pH 6.0?
A) The release of H+ ions from the exchange complex would help reduce the soil pH
B) Aluminum toxicity would increase in the vicinity of the limestone.
C) CO2 from root and microbial respiration would quickly solubilize the CaCO3 and increase its rate of downward movement
D) Conservation tillage would increase the pH of the subsoil
E) Earthworms would help move the limestone down into the soil profile.
E
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Provide a brief summary of the three main steps involved in contingency planning.
What will be an ideal response?
There is a special sale on engine oil. If you purchase more than one 12-quart case, you will receive a 5 percent discount. If you purchase six or more cases, you will receive a 10 percent discount. You have two vehicles that require an oil change every 4,000 miles. Vehicle #1 requires four quarts per oil change plus one additional quart when you also change the oil filter. Vehicle #2 requires five quarts per change plus one quart whenever the filter is changed. Each year your family drives vehicle #1 about 16,000 miles and vehicle #2 about 24,000 miles. You change the oil filter every other time the oil is changed. The normal price for oil is $22.49 per case. Oil filters cost $4.39 each. What will be the discount for a one-year supply of oil for both vehicles?
Fill in the blank(s) with the appropriate word(s).
Two types of refrigerants used in domestic freezers are ____________________ and ____________________.
Fill in the blank(s) with the appropriate word(s).
Generating ideas or concepts that could offer reasonable solutions to your problem is part of which phase in the engineering design process?
a. Recognizing the need for a product or service b. Problem definition and understanding c. Research and preparation d. Conceptualization