An igneous rock that is made of really small mineral crystals.
a: cooks rapidly
b: crystalizes slowly
c: undergoes as extreme changes in pressure
d: undergoes extreme changes in temperature

answer:

a) cools rapidly

explanation:

assuming you meant cool not cook. : )

good luck.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.