Glaciers Crossword Puzzle

QUESTIONS LIST: million : the last ice age began about two- _ years ago and the ice sheet began to retreat about eighteen-thousand years ago, erosion : a glacier is a huge mass of moving ice and is a powerful agent of _ , deposits : after glaciers have melted they leave behind glacial _ of sediment and debris, four : scientists have found evidence of at least _ major ice ages, continental : _ glaciers are massive ice sheets that cover large land masses, icecaps : large blocks of ice that cover mountain tops, snowline : a _ is a certain elevation where ice and snow remain all year, valley : a _ glacier is a long, narrow, wedge shaped mass of ice that moves through mountains, icebergs : large blocks of ice that fall off ice shelves into the ocean, horns : glacial _ are three-sided mountain peaks carved by ice.