In respect to the foundations of prejudice social identity theory is associated with the concept of

Cognitive thinking of social standing

Explanation:

Social identity theory has three key cognitive components

a) social categorization

b) social identification

c) social comparison

All individuals on this planet try to maintain a positive or favorable social image in order to create a favorable position for themselves  with in the society.

The social identity theory promotes social behaviour that is determined by the character and motivations of the person  as well as by the group to which it belong.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint