Life as we know it would not exist if ice were denser then liquid water. Rivers, lakes, and oceans control much of our climate, because large amounts of water take a very long time to heat up and cool down. So when at the beginning of summer the water is still cold from the winter, and at the beginning of winter the water is still moderately warm from the summer. That is why it is usually cooler on the lakefront. If ice happened to be even slightly denser the liquid water, then that means that it would sink. When winter came around when the wate
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