After a Certain Age, Most Mammals Lose Their Ability to Metabolize

question 133

Multiple Choice

After a certain age, most mammals lose their ability to metabolize lactose because:

• A) levels of the enzyme lactase decline.
• B) it competes with other nutrients in other food types.
• C) eating meat is not compatible with drinking milk.
• D) they no longer need the nutrients found in milk.

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Definitions:

Fixed Costs

Fixed costs refer to the expenses that do not change with the level of production or sales, such as rent, salaries, and insurance.

Revenue

The total amount of money received by a company from its business activities, such as the sale of goods or services, before any expenses are deducted.

Break-Even Volume

The number of units that must be sold for total revenues to equal total costs, resulting in no profit or loss.

Fixed Costs

Fixed costs are business expenses that remain unchanged regardless of the level of production or sales, such as rent, salaries, and insurance premiums.