The walls of the grand canyon are made of layers of sandstone. a dike cuts across some of the layers. when did the dike form? a) after erosion revealed the canyon wall b) at the same time as the sandstone formed and the canyon was eroded c) after the sandstone formed and before erosion revealed the canyon wall d) before the sandstone formed

Which statements are accurate about snow flakes

[ou.01]which of these is the most likely use of an electromagnetic wave which has wavelength shorter than microwaves but longer than visible light? o heat food safely o neat food safely o take images of bones and teeth o transmit radio and cellular phone signals o take images of bones and teeth o transmit radio and cellular phone signals o detect the location of objects which emit heat

People make choices about how to use resources.