What is the main function of a dental varnish?

Would you expect to see a river in a mountain or plain region? What percent of your body tissue is water? How does sawgrass reproduce? Why is respecting the Earth is important? Where are the cell bodies in relay neuron? Can a blue eyed male with both his parents having blue eyes marries a brown eyed female with her mother having blue eyes and her father having brown eyes could they have a brown eyed child? What is Krakatoa famous for? Do fossils of certain organisms appear more then once then one continent? What would happen if cell membranes were not selective permeable? What is hotter planets or stars? What would be a better calorimeter a thermos or a soda can? Why the outer planets did not lose the lighter gases in their atmospheres? What would cause a plant to wilt? What are the characteristics of intramuros? What instrument would you take along if you were going on a 3 month field study to measure how the weather on a mountaintop changes over the cours of a season? What evidence help sciencetist decidet that if Pluto is dwarf? What ocean is found east to Brazil? How does substrate concentration and pH affect enzymes? When ATP is broken down what are the three products? What is the usefulness of varves to geologists who study glacial lake deposits?