GENERAL KNOWLEDGE

Detailed explanation-1: -Age of fossils in the past was generally determined by radiocarbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms includes. No worries!

Detailed explanation-2: -The age of fossils is determined by figuring out the age of the rock in which the fossil is found. The most accurate method is radiometric dating. This method relies on the decay rate, or half-life of radioactive elements, to date the rocks directly.

Detailed explanation-3: -The rate of decay of a radioactive isotope is measured in terms of its half-life, or the amount of time required for a material to decrease by one-half. Scientists can use this information to calculate the absolute age of an object containing a particular radioactive isotope such as carbon-14.

Detailed explanation-4: -Fossils give us a useful insight into the history of life on Earth. They can teach us where life and humans came from, show us how the Earth and our environment have changed through geological time, and how continents, now widely separated, were once connected.