Water is essential to proper functioning of your body. Humans need to drink water to survive. Your body is approximately 60 percent water, your brain is 70 percent water, and your lungs are nearly 90 percent water. Each day, your body must replace 2.4 liters -- or about 2.5 quarts of water -- through ingested liquid and foods. Your body uses water in many ways.
Geochronology is the science of determining the age of rocks, fossils, and sediments using signatures inherent in the rocks themselves. Absolute geochronology can be accomplished through radioactive isotopes, whereas relative geochronology is provided by tools such as palaeomagnetism and stable isotope ratios.
Geomorphology (from Greek: Î³á¿, gÃª, earth; Î¼Î¿ÏÏÎ®, morphá¸, form; and Î»ÏÎ³Î¿Ï, lÃ³gos, study) is the scientific study of the origin and evolution of topographic and bathymetric features created by physical, chemical or biological processes operating at or near the Earth's surface.