What Is the Most Likely Cause of the Mass Extinction

question 13

Multiple Choice

What is the most likely cause of the mass extinction that occurred 65 million years ago?

• A) The Earth's rotation direction reversed when the north and south magnetic poles reversed.
• B) A giant asteroid hit the Earth.
• C) Mountain building episodes and other tectonic forces blocked animal migration during times of climate change.
• D) Forest fires caused a deficit in global oxygen.
• E) An increase in the luminosity of the Sun boiled away the oceans.

---

Definitions:

Disposal

The act of getting rid of an asset through sale, exchange, retirement, or destruction.

Continuing Operations

The segments or activities of a business expected to continue for the foreseeable future, excluding any discontinued operations from financial analysis.

Discontinued Operations

Components of a business that have been sold or terminated, which are reported separately in the financial statements.

Discontinued Operation

A segment of a company's business that has been sold, ceased to operate, or is scheduled for termination.