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.
Lev Kamenev - A leading Bolshevik, and a member of Lenin's Politburo in the early '20s. He would be executed by Stalin in 1936. Alexander Kerensky - A socialist (but not a Marxist), he became the leader of the Provisional Government in the summer of 1917, and fled to America after the Bolshevik coup. Nadezhda Krupskaya - Lenin's wife, and a tireless Bolshevik activist, she assisted her husband throughout his rise to power.