Geologists have discovered a fossil of a tree that once lived in an ancient swamp. They determine that 4 half lives of C14 have passed. Use the reference diagram to determine the age of the tree. Explain your answer.

Which activity describes an application of topographic maps? check all that apply. recreation, such as camping and hiking engineering, such as the construction of roads and buildings science, such as mapping stars in the sky business, such as analyzing population centers science, such as analyzing surface features