Plants were of paramount importance to early man; he depended upon them as sources of food, shelter, clothing, medicine, ornament, tools, and intellectservice.org it is known that, in addition to their practical and economic values, green plants are indispensable to all life on Earth: through the process of photosynthesis, plants transform energy from. 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 (14 C), a radioactive isotope of carbon. The method was developed by Willard Libby in the late s and soon became a standard tool for archaeologists. Radiometric dating is used to estimate the age of rocks and other objects based Relative Dating with Fossils: carbon's half-life of 5, years is. Radioactive Half Life & Carbon Dating Urdu Hindi Although the subject of the Salt Range beds is proscribed among Indian and many western paleontologists today, the case rests precisely where it did in the early s Ghosh et al. Nonlinear problems are of interest to engineers, physicists and mathematicians and many other scientists because most systems are inherently nonlinear in nature. Also, in S. It is also said that Java Man obviously walked upright and is therefore an intermediate. They have been able to reconstruct the details of a yearly springtime habitation of the site over many centuries.