How far deep they were dug up shows us what time period they came from so we can classify what dinosaur it is
First turn 18% to a decimal, which is .18, then multiply it by 450.
450 x .18 = 81
Answer:
the earth surface is constantly changing from force in nature the daily process of precipitation wind and land moments result in changes to landforms over a long period of time driving forces into rows and volcanoes and earthquakes people also contribute to changes in the appearance of land
