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The Earliest Mass Extinction Event Identified in the Geologic Record

question 9

Multiple Choice

The earliest mass extinction event identified in the geologic record occurred about 446 million years ago at the end of the Ordovician Period.Which of the following situations/events coincided with this mass extinction?


Definitions:

Ovarian Follicle

A small sac in the ovary that contains a developing egg (oocyte), which can potentially be fertilized and lead to pregnancy.

Oocyte

An oocyte is a female gametocyte or germ cell involved in reproduction; in its mature form, it is known as an ovum or egg cell.

Graafian Follicle

A mature ovarian follicle that is ready to release an egg during ovulation.

Blood Sugar Concentration

The amount of glucose present in the blood, an important energy source for the body's cells.

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