________ is a volcanic rock that is extremely vesicular and glassy.

Which of the following crystallizes at the highest temperature?

________ rocks are composed almost entirely of light-colored silicates.

The sizes, shapes, and arrangements of mineral grains in an igneous rock are known as ________.

Which of the following areas does NOT have a mid-ocean ridge?

Insoluble deposits that form within the urinary tract from calcium salts, magnesium salts, or uric acid are called kidney stones or renal  

The inability of the kidneys to excrete adequately to maintain homeostasis is  

Calcium reabsorption by the kidneys is promoted by the hormone  

The inability of the kidneys to excrete adequately to maintain homeostasis is  

The functional units of kidneys where blood is filtered and urine produced are called