The continental crust and oceanic crust together make up the A. lithosphere.
B. asthenosphere.
C. lower mantle.
D. upper mantle.

Which of the following best describes homeostasis? a. keeping the internal environment in a stable state b. keeping the external environment in a stable state c. beneficial characteristics resulting from mutation d. reproduction that results in offspring identical to the parent.

The tubes transporting minerals and water upward are called ?

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?