Why does cool rock material sink when convection takes place in the mantle

What is the mercury length of time for one revolution around the sun?

Aletsch glacier is the largest glacier in switzerland and the largest found in the alps, a mountain range which extends from monaco in the east to slovenia in the west. currently, the aletsch glacier is retreating. under what circumstances would this glacier see growth instead of retreat? a decline in plate tectonics across the mountain range annual snowfall that exceeds yearly losses an increase in ablation in the southern valleys a rise in temperatures to that of a mediterranean climate

The ratio of the measures of the three angles in a triangle is 14: 15: 11 find the measures of the angles