According to the law of superposition, younger layers of rock are generally found above older layers of rock. however, there are locations where older layers are found above younger layers. which of the following can cause this to happen?

Being able to find large amounts of old rock atop newer rock isn’t a scientific anomaly-for it to be even considered, there must be a large deposit of this old rock rather than just a few stones.

For something like this, you’d need a significantly altering event to disrupt the ecosystem in such a fashion. Depending on how old the samples are, a volcanic eruption could’ve set old layers above new ones during the height of the eruption. More commonly, however, it is a meteor impacting the surface of the earth that dislodges large amounts of earth and causes the older layers to be moved to the top.

Plate tectonics can also play a role, as shifting components can “crawl” underneath other plates, thus changing the chronological order of the rocks underneath; typically, the asteroids are the most common cause of layer shifting though.

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.

Idon’t know what the answer is i wish i could