There are two theories – a collision theory and a gravitational-tidal theory. The first theory suggests that when the solar system was being formed Venus (like […]
Its one of many diagnostic tests in and particularly good for identifying metallic minerals which tend to have a shiny metallic luster. The luster of a […]
Always remember that the word igneous is derived from the latin word called ignis which means fire. are formed either inside the surface of earth or […]