Seawalls are hard engineered structures with a primary function to prevent further erosion of the shoreline. They are built parallel to the shore and aim to hold or prevent sliding of the soil, while providing protection from wave action (UNFCCC, 1999).
Making the world better, one answer at a time. Vygotsky is best known for is theory of language acquisition, particularly the idea of scaffolding and the zone of proximal development.
Vygotsky was a pioneering psychologist and his major works span six separate volumes, written over roughly 10 years, from Psychology of Art (1925) to Thought and Language [or Thinking and Speech] (1934). Vygotsky's interests in the fields of developmental psychology, child development, and education were extremely diverse.