Explain how scientists use geologic time to determine the age of landforms.

As explained below.

Explanation:

The age of the earth is derived from studying the geologic time scale of the earth by the carbon dating and analysis of the fossils. Rocks on the earth are sufficient enough to show the age of landforms. The first attempt to make the geologic time scale was done in 18 C.E thus the earth was divided into the Primary, Secondary, Tertiary, and Quaternary landforms. It was William Smith who gave the successive period framework and suggested virtually finite earth. The primary period divided into Precambrian eon which included Hadean, Archean, Proterozoic periods. Which later on developed as Cambrian, Ordovician, Silurian, and Devonian, Carboniferous and Permian periods and the development of the secondary landforms the splitting of super landmasses and the formation of the tertiary period as the Triassic, Jurassic and the Cretaceous periods. The quaternary period stated with the Miocene, Pliocene, Pleistocene and continued to the present Holocene. From 4600-635 million years, and then tp peent 0.0042 million years.