List six reasons plants are important and explain why
What will be an ideal response?
Food source, shelter, clothing, purify the air we breathe, aesthetic beauty, stress
reduction, pharmaceuticals, fuel, prevention of erosion, wetland purification of water,
habitat, and cover for animals.
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On an overhead cam engine the cams are timed to the crankshaft using ________ on the sprockets
A) Wavy lines B) Pockets C) Timing marks D) A shortened sprocket tooth
The following statements are correct EXCEPT:
A) A potentiometer is used to determine EGR valve position on many OBD-II systems. B) Low restriction exhaust systems will have no effect on EGR system operation. C) Some systems monitor EGR operation by using a MAP sensor. D) The PCM controls vacuum applied to vacuum operated EGR valves.
Mechanization:
A. only is used for growing crops intended for processing. B. does not allow precise management of plant growing and harvesting. C. began with the grain crops but is now used for nearly all crops in some way. D. is only available for large-scale farming.
The currents used with A-CAC electrodes compared to shielded metal arc welding (SMAW) electrodes of the
same size are _____. a. much lower b. much higher c. slightly higher d. slightly lower