Question

What did scientist study to develope the geologic time scale?​

Answer 1

`{\tt{\blue{\underline{\underline{\huge{Question:}}}}}}`

What did scientist study to develope the geologic time scale?

`{\tt{\blue{\underline{\underline{\huge{Answer:}}}}}}`

`\longrightarrow` The geologic time scale was developed after scientists observed changes in the fossils going from oldest to youngest sedimentary rocks. They used relative dating to divide Earth's past in several chunks of time when similar organisms were on Earth.

`\huge\boxed{\fcolorbox{blue}{blue}{Thank \: you}}`

Answer 2

fossils

Step-by-step explanation:

fossils are rocks that we here millions of years ago. the ocean and the atmosphere cannot be used since they can change over time. fossils cannot change even after millions of years.