The relationship governing the intraindustrial and interindustrial sales and purchases of four basic industries - agriculture (A), manufacturing (M), transportation (T), and energy (E) - of a certain economy is given by the following input-output matrix.
A M T E 
How many units of energy are required to produce 2 units of all goods in the economy?
__________ units
Which sector of the economy is least dependent on the cost of energy?
__________
Definitions:
Acupuncture
A traditional Chinese medicine technique that involves inserting thin needles through the skin at specific points on the body to alleviate pain or treat various health conditions.
Tai Chi
A form of Chinese martial arts practiced for both its defense training and its health benefits, involving slow, controlled movements.
Fear of Falling
An excessive worry about falling that can affect the physical and psychological wellbeing of individuals, particularly the elderly.
Balance
A state where different elements are equal or in the correct proportions.
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