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Describe three ways in which astronomers can distinguish between interstellar absorption lines and stellar absorption lines.
Interest Expense
The cost incurred by an entity for borrowed funds, reflecting the interest payments due on any form of debt.
Tax Expense
The amount of money that a company owes in taxes based on its net income, adhering to the tax laws of the jurisdictions in which it operates.
Gross Margin
The difference between sales revenue and the cost of goods sold, expressed as a percentage of sales revenue, indicating the financial health of a company's core activities.
Net Operating Income
The total profit of a company after operating expenses but before deducting interest and taxes.
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