This mixture of fresh and salt water creates a unique environment is filled with life of all kinds.

The creatures on the ocean floor manage to survive without sunlight and getting energy from other sources.

The water in the ocean also keeps the temperature of the earth steadily by absorbing and releasing heat.

Heat capacity is the amount of energy that takes to raise the temperature of a substance one degree centigrade.

The density of pure water is 1 000 kg/m³, meaning that one cubic meter of water weighs for one thousand kilograms.

The nutrients in whatever falling into the ocean will quickly become available to other living creatures.

Water is a liquid at room temperature and has a relatively high frozen point.

Water is actually quite simple, but the way how the water molecule is formed gives water its unique properties.

A.If a substance has a higher density, say 5 000 kg/m³,it will not float on water.

B.If a substance has a higher density, ______ ______,5 000 kg/m³,it will not float on water.

A.Even though the pure water is something that gives seawater its main properties, the salinity of seawater affects both its weight and freezing point.

B.Even though the pure water is ______ gives seawater its main properties, the salinity of seawater has ______ ______ both its weight and freezing point.