The foot is comprised of ____ bones.?

What converts for curvature in a field so that a flat field with uniform focus is seen?

a. Achromatic objective lens b. Plan-achromatic objective lens c. Spherical correction ocular lens d. Blue filter when placed above the condenser

The concept of __________ addresses the question "Does it matter; and if so how much?"

a. values b. conduct c. morals d. beliefs