Why is the sky blue? The earth is surrounded by an atmosphere

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

The process of predicting values that extend beyond the range of data points is called absolute value extrapolation interpolation prediction for any given: )