The steps by which water freezes are what makes water very important biologically. A property of water that is especially important for life in cold climate is that it attains maximum density at 4°C,just above the 0°C freezing point.
Therefore as water begins to drop in temperature when its surface is cooled, the water at the surface will reach this highest density. The surface water will then begin to sink, displacing the warmer water below it. This results in freezing of water from the surface downward.
The effect takes place in ponds and lakes that are located in cold climates. Their surface freezes, and the water underneath remains liquid protecting the organisms that live there.
A gas flow from an area of high pressure, to an area of low pressure. The diaphragm expands and contracts to manipulate the pressure within the lungs to either be greater or less than the atmospheric pressure.
Sorry but cant answer it its not a question
The answer is B. Roundworms. Protostome creatures are divided into three groups, and nematoda or roundworms are under the Ecdysozoa group, together with arthropods (spiders etc.)
The ciliated simple columnar epithelium is a tissue that would line the uterine tubes and function as a conveyor belt to help move a fertilized egg toward the uterus. The ciliated columnar epithelium transfers mucus and constituents through cilia and is originate in the upper respiratory area the fallopian tubes, the uterus, and principal part of the spinal cord. It is the main objective of contamination for common cold illnesses.
