Final answer:
Ice tends to form in shady areas, as well as snowy areas. This is because ice forms on the surface of water and is less dense than liquid water. If ice were denser, it would sink as fast as it forms, causing bodies of water to freeze from the bottom up.
Step-by-step explanation:
Ice tends to form in shady areas, as well as snowy areas. This is because ice forms on the surface of water and is less dense than liquid water. If ice were denser, it would sink as fast as it forms, causing bodies of water to freeze from the bottom up. This would be lethal for most aquatic creatures. The expansion of water when freezing also explains why unprotected pipes in houses break if they are allowed to freeze.