What is the difference between macronutrients and micronutrients?
What will be an ideal response?
Macronutrients are nutrients that the plant needs in large amounts. Micronutrients are nutrients that the plant needs in relatively small amounts.
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The red wolf has become endangered because of persecution by humans, loss and degradation of habitat, and interbreeding with gray wolves
a. True b. False Indicate whether the statement is true or false
An electric company must decide between two options for managing the blowdown water from its cooling tower. Option 1 is to continue the lease on 50 acres of land for another 5-year period and dispose of the water by spray irrigation. The landowner will move the pipe around as necessary and maintain the spray nozzles and valves. The previous lease cost $125,000 per year with payments due midway through each year. Now the landowner will require beginning of year payments of $180,000 each year. Option 2, which releases the 50 acre tract of land, involves purchasing a treatment system that will allow the recycling of most of the blowdown water. This system will have an initial cost of $1,600,000 and an AOC of $58,000 per year. However, the company will save $220,000 per year
because it will not have to purchase as much make-up water as with option 1. At the end of 5 years, the company will be able to sell the equipment back to the local equipment supplier for 30% of the first cost. If the electric company uses a MARR of 15% per year, should it continue to lease (defender) or purchase the treatment system (challenger)? What will be an ideal response?
The two main electrical parts of a contactor are:
A) The contacts for L1 and L2. B) The input module and the output module. C) The armature and the frame. D) The coil and the switches or contacts.
Which of the following statements applies when heating a bearing with a torch during the removal process?
a. Never use a propane torch. b. Use an aluminum ring for a heat sink. c. Cool the bearing with a wet cloth as soon as it is removed. d. Do not reuse a bearing removed this way.