The thick, white, opaque connective tissue that is part of the outermost layer of the eyeball is called the sclera.
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Define Sclera.</h3>
The sclera is the eye's white outer layer. From the cornea (the transparent front portion of the eye) to the optic nerve in the back of the eye, it is a tough, fibrous tissue. The eyeball's white tint is a result of the sclera. The same kind of collagen fibers is used to make both the cornea and sclera. The sclera serves as the eyeball's retaining wall. It safeguards your eyeball from harm and aids in maintaining its shape. Conjunctiva, which are transparent mucous membranes that lubricate (moisturize) your eye, cover the sclera. Your eyeball can be moved side to side and up and down with the assistance of sclera-attached muscles.
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William McKinley <em>was the 25th president of the</em> United States.
Answer:
coal
Explanation:
coal came in to use as a major and energy source during the industrial revolution of the 170os 1800s. during this period, steam-powered engines with coal-fueled boilers were used to power ships in trains. the outbreak of the U.S. Civil War led to call replace in charcoal as a fuel source for steel furnaces.
What most definitions have in common is an attempt to categorize peoples primarily by their physical differences. In the United States, for example, the term race generally refers to a group of people who have in common some visible physical traits, such as skin colour, hair texture, facial features, and eye formation. A race is a grouping of humans based on shared physical or social qualities into categories generally viewed as distinct by society. The term was first used to refer to speakers of a common language and then to denote national affiliations
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