Which phrase describes the way that air particles vibrate with respect to the way sound waves travel? A. Opposite to
B. Equal to
C. Perpendicular to
D. Parrallel to

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

What is a metal replacement reaction