One of the many unique properties of water is that its solid form (ice) is less dense than its liquid form. most substances become more dense when in solid form, because their molecules are more tightly compact. why is this property of water so important to life on earth? a) nutrients are easily dissolved in water to allow distribution b) surface water freezes and insulates the water below for marine life c) it allows water to travel up plants to distribute water to stems and leaves d) ocean water temperature doesn't fluctuate as much due to its high specific heat