What Is the Most Abundant Element on the Earth (Including

question 29

Multiple Choice

What is the most abundant element on the earth (including the crust,oceans,and atmosphere) ?

• A) silicon
• B) oxygen
• C) hydrogen
• D) carbon
• E) iron

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Definitions:

Convex Lens

A lens that converges light rays to a point, having a curved shape that is thicker in the middle than at the edges, used to correct farsightedness.

Visual Acuity

The clarity or sharpness of vision, measured as the capability to identify letters or numbers at a standardized distance.

Accommodation

The eye's ability to change its focus from distant to near objects, achieved by changing the lens shape.

Diverge

To move or extend in different directions from a common point; to branch off.