Which is the correct bond type for BeS? Which is correct for Ca3Na2

A. IONIC
B. COVALENT
C. METALLIC.
D. NONE OF THE ABOVE

The eruption of a volcano lowers the temperature in the environment. The first time this observation was made, it was noticed that winter came aryl that year and the first snow that fell did not immediately melt on the ground. The ash and smoke from the eruption of volcanoes creates a cloud and shroud which dims the effect of the sun and the land gets less exposure to strong sunlight. This in turn results in the lowering of temperature.