Which of the following rock formations likely existed before the development of a stack?
A) sea arch
B) mesa
C) alcove
D) butte

A) sea arch

Explanation:

A natural arch or sea arch can be defined as a natural bridge which forms with an opening underneath.  A natural arch or sea arch is formed when the stacks are subjected to erosion. A stack can be defined as the geological form that is formed by the water wave erosion due to vertical column. The sea arches form inland cliffs, fins and other forms.

-be a crystalline solid

- be soluble in water

-conduct electricity

hope this : )

8

explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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