A landform developed by the process of deposition occurring towards the centre of intermontane basins in arid or semi-arid regions is known as _________
During Pleistocene epoch, four glacial phases were identified. Which one of the following is the correct chronological order in which they appeared during this epoch from early times?
During the recent Venus transit (June 2012), the planet appeared as a tiny black circle moving on the Sun. The black colour on the sun is because the planet :