geologic

radioactive isotope is involved (e.g., Uranium-238, Carbon-14) and its half-life. Step 2: Interpret the Data Provided Look at the ratios of parent to daughter isotopes or other given values. Step 3: Use the Decay Formula Apply the relevant formula to find

se questions reveal the complexity and interconnectivity of Earth’s history. For example, the boundary between the Paleozoic and Mesozoic eras is defined by the Permian-Triassic extinction event, the largest mass extinction in Earth’s history, which wiped out approximately 90% of marine species. The