Which colligative property is employed when salt is put on an icy sidewalk to melt ice?

vapor-pressure lowering

boiling-point elevation

freezing-point depression

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary