Given that the dilution is equal to the final volume divided by the initial volume (Df = Vf/Vi), What is the dilution factor if you mix 6 ml of a NaCl solution with 12 ml of water?

b. the carbon cycle ensures living things have a source of hydrogen

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs