Describe one of the possible results from the supernova hypothesis that was not supported by the fossil record or the iridium layer

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.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c