Why is the age of the ocean crust used as evidence for plate tectonics?

What is the value of keq for the reaction expressed in scientific notation?

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.