How Long Did Glacial Periods,which Occurred Over the Last Million

question 8

Multiple Choice

How long did glacial periods,which occurred over the last million years,last? 

• A) 10 to 100 years 
• B) 100 to 1 000 years 
• C) 1 000 to 10 000 years 
• D) 10 000 to 100 000 years

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Definitions:

Suspensory Ligaments

Fibrous tissues that support an organ or structure, such as the lens of the eye, keeping it in place.

Ciliary Body

A part of the eye that includes the ciliary muscle, which controls the shape of the lens for focusing, and the ciliary processes that produce aqueous humor.

Optic Nerve

The optic nerve is a crucial part of the eye and visual system, transmitting impulses from the retina to the brain to produce vision.

Ciliary Muscles

A ring of smooth muscle fibers in the eye's middle layer that adjusts the lens's curvature to focus on objects at varying distances.