Afossil that is used to assign an age to the rock layer in which it is found is called an indicator fossil.

Which summarizes the relationship between density of an element and its distribution in earth? a. the greater an element’s density, the greater the amount of it found in the crust. b. the denser an elements is, the smaller the amount of it earth core. c. the greater an elements density, the smaller the amount of it’s found in the crust

The kind of wood most often used in contemporary furniture is

Horizon a is also sometimes called a. topsoil b. subsoil c. bedrock d. weathered bedrock