Author Question: The cones are most densely packed in a small spot at the center of the retina called the__________. ... (Read 182 times)

Brittanyd9008 · **on:** Jun 19, 2018

The cones are most densely packed in a small spot at the center of the retina called the__________.

A) cornea
B) iris
C) sclera
D) fovea
E) Select

Question 2

Dr. Hans Zarkoffis testing groups of teenagers and senior citizens on their ability to imagine the rotation of objects in space. He finds that the teenagers perform much better than the seniors. Dr. Zarkoffinitially suspects that his results are due to the declining mental ability of the senior group, but then realizes that the teenagers have had more experience with video games. This is an example of a____effect.

a. cohort
b. mortality
c. history
d. testing