Answer: The answer is variable.
Explanation: Scientists may do a start out hypothesis on the info they have. But if something changes in that experiment, it is the Variable.
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Right after you dissected away the anterior chamber of the eye you were able to see the lens.
The anterior chamber of the eye lies in the front portion of the eye between the cornea and the iris. The chamber is filled with a water like fluid called the aqueous humor. This fluid is passed to the anterior chamber through the posterior chamber.
Lens is the biconvex ocular structure of the eye. It is optically transparent. It works along with the cornea to transmit the light into the retina without much scattering. The lens of the eye can be replaced. It starts deteriorating as the age increases.
To know more about lens, here
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Maintain a healthy weight and be physically active. ...
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Get regular medical care.
I believe the correct answer is 5 days a week are suggested in order to maintain your present fitness level.