The answer is b] hydroelectric power
Answer:
b. unlimited wants and limited resources.
Explanation:
There are different definitions of economics. Some say it´s a science that studies the production, distribution and consumption of good and services. Another definition refers to the theories and models that govern the market process. But definitely, economics must strike a balance between a society´s wants - that may be unlimited - and the limited resources available.
Answer:
You expect the trailer brakes to come on and:
A The tractor protection valve to close.
You expect the trailer brakes to come on and: A The tractor protection valve to close. The pressure loss could be caused by a trailer breaking loose, thus tearing apart the emergency air hose. Or it could be caused by a hose, metal tubing, or other part breaking, letting the air out.
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The answer is b I’m not sure tho lol