Question

the open spaces in waters crystal structure make it possible for... (a) aquatic life to exist at the north pole. (b) water to have a low boiling point. (c) life to occur in hot springs. both (b) and (c). (a), (b), and (c).

Explanation:

The open - spaces in water's crystal structure (when it freezes to ice) make ice less dense than liquid water. This causes ice to float on water, creating an insulating layer that allows aquatic life to exist in the liquid water below at the North Pole. The boiling point of water is determined by hydrogen bonding, not the open - spaces in the crystal structure. Life in hot springs is related to the organisms' adaptations to high - temperature environments, not the open - spaces in water's crystal structure.

Answer:

A. aquatic life to exist at the North Pole.