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Many crustaceans use their tails to swim, but crabs have reduced tails that are not used for swimming. the crabs’ tail is [a]A) an example of convergent evolutionB) a homologous structureC) an example of natural selectionD) a vestigial trait

What method is widely used to measure the age of a fossil?A) whole life decay mechanismsB) sequence fossils in rock strataC) use uranium-238D) radiometric dating 

What section of the cerebral cortex is responsible for voluntary movement, expressive language and for managing higher level executive functions such as capacity to plan, organize, initiate, self-monitor and control one’s responses in order to achieve a goal?

Where do the preganglionic fibers of the parasympathetic system originate?

The inner area of white matter in the Cerebellum that is organized into narrow branches that resemble those of a tree.

Select the R code that will compute the probability for the range of values of the Normally Distributed random variable X with mean 3.0 and standard deviation 0.25 specified by the red-shaded region.  

___________________ is the background rate of sympathetic and parasympathetic activity.

This structure of the brain relays sensory impulses from receptors in various parts of the body to the cerebral cortex.  The prevailing opinion among experts is that this structure serves as a kind of “gate,” filtering and relaying 98% of all sensory input being relayed from receptors to the cerebral cortex.   Which number corresponds to the structure described?  

Where would you expect to find the white matter of the cerebrum?

How would you describe this spinal tract?