see http://en.wikipedia.org/wiki/Greenhouse_Earth
cold period, glacial period
Ice House Ice House
"Ice Age" is a proper noun because it refers to a specific geological period in Earth's history characterized by extensive glaciation. Proper nouns name particular entities, while common nouns refer to general items or ideas. Therefore, the term "Ice Age" should be capitalized and is not a common noun.
America's Ice Box
The mammoth is used to make ice cream and ice for the villagers. They roll the snow with their snout to harvest.
It was called the ice age because Europe and Asia were connected by the ice. Get it ice age.
Nice
ice, smoothy, watery snow
freezer, cooler, ice chest
The noun 'igloo' is a common noun, a word for any igloo of any kind, anywhere.A proper noun is the name of a specific person, place, thing, or a title; for example:Igloo Island, NL, CanadaSorrisniva Igloo Hotel, Sorrisniva, Alta, NorwayIgloo Products Corporation, Katy, TXIgloo Cocktail Bar, Liverpool, UK"Tales from the Igloo", a book of fables and legends by Maurice Metayer
they used ice
Ice Age Ice Age: The Meltdown Ice Age: Dawn of the Dinosaurs Ice Age: Continental Drift Ice Age: Collision Course