The law of superposition states that rocks or fossils form in layers . The contents of each layer are from which choice ? (Don’t use for points)

A. different time periods

Explanation:

The contents of the layers are from different time periods based on the law of superposition of strata.

This law states that "in an undisturbed sequence of strata, the oldest layer can be found at the bottom and the youngest on top".

The rock layers and their contents are usually from different time periods. Most times biostratigraphic study of the strata would reveal the ages of the beds.

False

Explanation:

Mass and volume are two different quantities. In fact:

- Mass is a scalar quantity representing the "amount of matter" contained in a certain substance. It is measured in kilograms (kg), which is one of the 7 fundamental SI units.

- Volume is a scalar quantity representing the amount of "three-dimensional space" occupied by an object or a substance. It is measured in cubic meters ().

Therefore, mass and volume are two different quantities. They are related through another quantity called density, given by:

where

m is the mass

V is the volume

So the density of a substance represents the amount of mass contained in a certain volume of the substance.