Mutualism Relationships. Like humans, other living species, such as animals, plants and other bacteria too, help each other for better survival. No living organism can survive in isolation. All the living organisms depend on each other for food or shelter.
The definition of low is  something with little height, emotionally depressed, below the surface level, quiet or deep in pitch. An example of low is fog resting on the ground. An example of low is someone feeling sad. An example of low is speaking quietly.
1. change toward something smaller or lower. 2. a condition inferior to an earlier condition; a gradual falling off from a better state. 3. a gradual decrease; as of stored charge or current. 4. a downward slope or bend. Familiarity information: DECLINE used as a noun is uncommon.