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JervalIUNIS
Use the drop-down menus to answer the questions.
Which rock layer was the youngest?
How do you know that the rock layer is the youngest?
Breccia
Conglomerate
COM
Dolostone

The  youngest rock layer is always those on the top .

Explanation:

Breccia and conglomerate are similar sedimentary rocks composed by fragments larger than two millimeters in size.  

Dolostone is a carbonate sedimentary rock that contains dolomite and is related to limestone.

DOM is the abbreviation of the term Dispersed Organic Matter.

1. Which rock layer was the youngest?

conglomerate

2. How do you know that the rock layer is the youngest?

it was at the top of all the layers

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i took the test

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.