What are the two division of letreture?

What is the definition of sedimentary rock? Do Jupiter have a very tilted axis? The energy required to convert a ground-state atom in the gas phase to a gaseous positive ion? Which river has its origin in glacier in Tibet? If one million kilocalories of energy are stored in producers in an ecosystem how many kilocalories can be transferred to tertiary consumers in the ecosystem? Have green fingers? Approximately how much would a pair of Nikon Monarch binoculars cost? A group of people who are caring for both their parents and their children are called what? Can you see the white cliffs of dover from France? What is a solid geometric shape formed by a mineral? Can halogen heaters give you sunburn? Can a ring maker set an imiliac pallasite on a ring? What brain structure does the inner ear work with to maintain equilibrium and balance? How can a particle itself be it's antiparticle? Are promoter a part of an intron? Do non living things have atoms? Plants which do not make their own food are called? The intelligent design movement seeks scientific backings for creationism? Where can you read The Son of Neptune online? What planet is known to have an intelligent life?

What are the two division of letreture?