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.
Viktor Nikolayevich Leonov ( Russian : ÐÐ¸ÐºÑÐ¾Ñ ÐÐ¸ÐºÐ¾Ð»Ð°ÐµÐ²Ð¸Ñ ÐÐµÐ¾Ð½Ð¾Ð²) (21 November , 1916 in Zaraysk â October 7, 2003 in Moscow ) was a Soviet sailor, two-time Hero of the Soviet Union . Viktor Leonov helped lay the foundation for modern day Russian Spetsnaz operations. Early life Leonov was born in Zaraysk about 135 kilometers southeast of Moscow . His father was a gardener and member of the Communist Party .