Emerging Viruses Arise by

question 2

Multiple Choice

Emerging viruses arise by

• A) mutation of existing viruses.
• B) the spread of existing viruses to new host species.
• C) the spread of existing viruses more widely within their host species.
• D) mutation of existing viruses, the spread of existing viruses to new host species, and the spread of existing viruses more widely within their host species.
• E) none of these.

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Definitions:

Tolerances

The permissible limits or variations in dimensions, properties, or conditions of an object or system, allowing for proper function without exact precision.

Tightness

The quality or state of being fixed or secure, often referring to the absence of unwanted movement between parts.

Looseness

The state or condition of being not tightly fixed or securely attached, leading to undesired movement.

Tolerance Zone

The acceptable range of deviation from a specified dimension that a part can exhibit and still meet the necessary specifications.