Which empire's accomplishments include the Ishtar Gate, the Hanging Gardens of Babylon, and a knowledge of astronomy and medicine? Social roles began to change. I know this is the right answer because with the division of labor, women's placed in society became splintered. The laws ensured equality among the classes. Code of hammurabi enforced equality; trials were merely a part of that equality.
How do scientists figure out how old things are? | Live Science
Radiocarbon dating: radioactive carbon decays to nitrogen with a half-life of years. In dead material, the decayed 14C is not replaced and its concentration in the object decreases slowly. To obtain a truly absolute chronology, corrections must be made, provided by measurements on samples of know age. The most suitable types of sample for radiocarbon dating are charcoal and well-preserved wood, although leather, cloth, paper, peat, shell and bone can also be used.
Tracing and Dating Young Ground Water
Radiocarbon dating also referred to as carbon dating or carbon dating is a method for determining the age of an object containing organic material by using the properties of radiocarbon , a radioactive isotope of carbon. The method was developed in the late s at the University of Chicago by Willard Libby , who received the Nobel Prize in Chemistry for his work in It is based on the fact that radiocarbon 14 C is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen. The resulting 14 C combines with atmospheric oxygen to form radioactive carbon dioxide , which is incorporated into plants by photosynthesis ; animals then acquire 14 C by eating the plants.
Water fasting is a period when a person eats no food and drinks only water. Fasting in this way may help with weight loss, but is it safe, and do the effects last long-term? People may undertake water fasting to lose weight, for spiritual or religious reasons, or to try and combat particular health problems. Research suggests that occasional fasting may help with weight loss, although other methods may be more effective long-term. To make sure that water fasting is done safely, people should prepare properly and choose a good time to go without food, when the body does not require too much energy.