Earth science !

ripple marks, mud cracks and fossils are all characteristics of:
sedimentary rocks
metamorphic rocks
igneous rocks
minerals

cherts and geodes can be found in:
granite
volcanoes
limestone
silica

these rocks are often classified by their composition and texture:
sedimentary
metamorphic
igneous
minerals

these rocks can be classified as regional or contact:
sedimentary
metamorphic
igneous
minerals

the unique characteristics of sedimentary, igneous and metamorphic rocks tell us about:
how, why and where a rock formed
hot spots around the earth
weathering
movement of inorganic materials

1. Sedimentary

2. Limestone

3. Metamorphic

4. Weathering

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: