When an object gets closer to you, the image of that object projected onto your left and right retinas moves farther apart. Conversely, as an object moves farther away, the image on your retinas gets closer together. The ability to determine distance based on this change in retinal projection is called retinal ____.
a. occularity
b. disparity
c. parallax
d. kinesthesis
Question 2
How long must ADHD symptoms persist before a diagnosis can be made?
a. Two to three months
b. Six months
c. At least one year
d. There is no set time during which symptoms must persist.
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Image
The right- and left-handed helical forms of DNA