The Most Accepted Explanation for the Mass Extinction Event at the Cretaceous-Tertiary

question 30

Multiple Choice

The most accepted explanation for the mass extinction event at the Cretaceous-Tertiary boundary is

• A)volcanic activity in Asia.
• B)an asteroid impact in Central America.
• C)climate change brought on by Australian fires.
• D)a freshwater bacteria that caused kidney failure.
• E)a virus spread by small mammals.

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Definitions:

Flat Sheet

A type of raw material that comes in flat panels, typically used in manufacturing or construction; it can be cut and shaped into various parts and forms.

Without Cutting

A manufacturing or shaping process that does not involve removing material, such as bending, casting, or forming.

General Contour

An outline that represents the shape or form of an object, especially used in design and drafting to indicate general shapes.

Front View

The principal view of an object in technical drawing, depicting the most characteristics of the design, typically facing the observer directly.