No. Extensive glaciation was limited to the southernmost land masses. Tropical regions remained quite warm.
These are called 'glaciers', which are disappearing at an alarming rate.
Technically, yes. Ice ages are not continuous periods of cold, but rather have cycles of colder glacial periods and warmer interglacial periods. We are currently in an interglacial period.
yes, everything was
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The movie Ice Age was first released on DVD on November 26, 2002. It was released in theaters earlier in the same year on March 15 and earned $383,257,136 worldwide.