Humans born blind or kittens raised under restricted conditions do not have the cortical regions needed to interpret visual stimuli. sensory restriction does not appear to do damage if it occurs later in life. this suggests

A critical period exists for normal perceptual development.

Explanation:

As the exercise suggests, there is a critical period for perceptual development. A critical period, as the name also suggests, is a maturational stage in the lifespan of, in this case, humans born blind and kittens, in which the nervous system is still sensitive to enviromental factors. That's why, if the sensory damage was to be done later in life, there would not be more damage. This explains the critical period for perceptual development.

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)

i am a priest who cares deeply about the church. i have been called here to explain my views on indulgences and other proposed reforms. i would like to explain why my views are consistent with the bible and are correct.