Is Isoheptenes hazardous when wet

Why are people not able to scuba dive in the deep part of the ocean

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.

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils