Biomes a large geographical area characterized by generally similar climatic conditions throughout. It is defined by the dominant pant species found in the region. The plants determine which animals can survive. Temperature variations are not as great due to the ability of water to hold and absorb heat. Water is not a limiting factor.
Most photosynthesis takes place near the surface of aquatic systems.
Provides the most stable aquatic environment. Absorbs and holds large quantities of solar heat and helps to stabilize the earth's atmosphere. Contains a relatively constant supply of nutrient materials and dissolved salts. Serves as a habitat for a large number of diverse organisms. Ecosystems tend to change with time until a stable system is formed.