According to his eye doctor, 60-year-old Bobby has developed a condition called presbyopia. This means that
A) the size of his pupil has shrunk and the lens has yellowed.
B) the lens has lost its capacity to adjust to objects at varying distances entirely.
C) the vitreous has developed opaque areas, reducing light to the retina.
D) his vision is more disputed by bright light sources, such as headlights.
B
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Josh has taken a tranquilizer to calm down. While walking barefoot across his kitchen,
he stubs his toe. Most likely, Josh a. senses the pain in his toe, but it doesn't bother him much. b. realizes what he has done but does not feel any pain because of the medication he has just taken. c. feels his toe hurting like crazy and is emotionally upset about it. d. does not even realize that he has hurt himself. e. will respond exactly the same as he would had he not taken the tranquilizer.
According to the article Zipping Up the Genes about twins reared apart, when a trait is measured within a
group and some differences are found within the group, the statistic usually used to describe the differences is the (a) mean (b) average (c) variance (d) median