Why Do Scientists Consider HIV to Be an Emerging Virus

question 24

Multiple Choice

Why do scientists consider HIV to be an emerging virus?

• A)HIV infected humans long before AIDS first become a problem in the early 1980s,but it has now mutated to a more deadly form.
• B)HIV mutates so rapidly that the virus of today has very little similarity to the virus in the first AIDS patients from the early 1980s.
• C)HIV used to infect only chimps,but it has mutated in such a way that it now infects humans.
• D)HIV is now starting to cause diseases other than AIDS,such as rare types of cancers and pneumonias.

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Definitions:

Income Statement

A financial statement that shows a company's revenues and expenses, leading to its net profit or loss over a specific period.

Net Operating Income

The total profit of a company after operating expenses have been subtracted from total revenue, but before deducting taxes and interest.

Traceable Fixed Expenses

Fixed costs that can be directly linked to a specific product, department, or segment of a business.

Variable Expenses

Costs that change in proportion to the activities or volume of a business.