Primary succession on Rangitoto Island. Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and other organisms usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited.n primary succession pioneer species like lichen, algae and fungi as well as other abiotic factors like wind and water start to normalize the habitat. Primary succession begins on rock formations, such as volcanoes or mountains, or in a place with no organisms or soil.
The ego-defensive function refers to holding attitudes that protect our self-esteem or that justify actions that make us feel guilty. For example, one way children might defend themselves against the feelings of humiliation they have experienced in P.E. lessons is to adopt a strongly negative attitude to all sport. The ego-defensive function refers to holding attitudes that protect our self-esteem or that justify actions that make us feel guilty.
The id, ego and super-ego are three distinct, yet interacting agents in the psychic apparatus defined in Sigmund Freud's structural model of the psyche. The three parts are the theoretical constructs in terms of whose activity and interaction our mental life is described. According to this Freudian model of the psyche, the id is the set of uncoordinated instinctual trends; the super-ego plays the critical and moralizing role; and the ego is the organized, realistic part that mediates between the