Igneous rocks are defined as formations made from solidified lava or magma.
When lava or hot Magma reaches the surface of the earth or a water body it quickly cools down and changes it's from from a hot liquid to a solid rock.
The chemical composition of Igenous rocks can vary depending on their location, cooling time etc.
However, most Igenous rocks contain some or all of the following minerals:
1. Quartz
2. Micas
3. Amphiboles
4. Olivines
5. Pyroxenes
6. Feldspathoids
7. Feldspars
Two that I know of are a sextant, and maybe an astrolabe
Answer:
the answer is 9% but that not an option so I would just put 10%
Answer:example of the Levallois technique of the Middle Paleolithic.
Explanation:
Levallois technique is the term used to ascribe to the production of a stone tool by striking the core to remove flakes from a stone core before detaching the final stone which has resemblance to a turtle shell.
Levallois has been traced by Archeologists to have been used by modern man during the Middle Stone Age of the Middle Paleolithic Acheulean era.
