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The central "engine" of an active galaxy appears to be
Inventory
Inventory is the total amount of goods and materials held by a company for the purpose of resale or production.
Return on Total Assets
Return on Total Assets is a financial ratio that measures the profitability of a company in relation to its total assets, indicating how effectively a company is using its assets to generate earnings.
Profitability
The ability of a company to generate earnings above its costs and expenses over time.
Margin of Safety
The difference between actual or projected sales and the break-even point; measures the risk of not covering fixed costs.
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