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Ivan III doubled his territory in Russia when he conquered which land?
Colorblindness
A visual impairment in which an individual has difficulty distinguishing between certain colors, usually between red and green, due to absent or defective color-sensitive cells in the eyes.
Perceptual Constancy
The brain's ability to recognize objects as constant and unchanging despite changes in sensory input such as lighting, distance, or angle.
Linear Perspective
A depth cue in visual perception where parallel lines appear to converge in the distance, helping to create an illusion of depth in a two-dimensional image.
Sound Waves
Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
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