3. Draw a model of your site. Include labels for the different rock strata and the fossils found there. Make note of what color or texture of sand/soil might best represent each strata for your 3D model.

So the main goal for the elements is stability which is a complete/full valence shell and typically the magic number for a stable element is 8 valence electron but not always. so elements to the left of the periodic table tend to be way less stable then those on the right, so the elements on the left are much more reactive.

Hey : )a transition from the first energy level to the fourth energy level