Question

the picture below shows an alligator sticking its snout out from under a frozen pond. these animals can survive the winter months in the water, only needing to have their snout above the ice layer to breathe.
what property of water protects the alligator during the winter months when the pond freezes?
water expands creating an insulated barrier that floats on top, causing the water below it to be warmer.
water is able to moderate its temperature to match the body temperature of the organisms that inhabit it.
water is a universal solvent in freezing temperatures, allowing essential nutrients to dissolve as needed for cellular processes.
water exhibits cohesive properties that allow the molecules to stick to one another.

Explanation:

When water freezes, it expands and ice (frozen water) is less dense than liquid water. This causes ice to float on the surface of water bodies, creating an insulated barrier. This barrier helps to keep the water below warmer, which is beneficial for aquatic life during winter months. Water does not moderate its temperature to match organisms' body - temperature. Water is a universal solvent in general, not just in freezing temperatures. While water has cohesive properties, this is not the property that protects aquatic life during winter by keeping the water below warmer.

Answer:

Water expands creating an insulated barrier that floats on top, causing the water below it to be warmer.