Two earth scientists are exploring a cave. while moving through the cave, they notice that the caves have smooth limestone walls
and that a creek runs through it.
what do their observations tell you about the cave's formation?
a. the cave was formed by deposition of sediments.
b.
the cave produces water from its rock walls.
c.
the cave once was located on the surface of the land.
d. the cave was formed by water wearing away rock.

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor:

Answerstratovolcanoes///near or in the ring of fire;