One thing scientists in the late 1700s could determine about the fossils they were finding were fossils in the upper layers were younger than fossils in lower layers. The correct answer is A.
The statement is true, most of the countries from the Middle East are heavily dependent on foreign food. Most of this region is desert or semi-desert, so agriculture is not an option. Only few parts manage to produce food, but that is nothing in the whole picture. So the lack of fertile soil and water in this part of the world, made it dependent on foreign food.
Answer:
Quartz
Explanation:
<u>Quartz is a resistant mineral whose hardness is 7, according to the Mohr's hardness scale</u>. It is made up of silicon and oxygen and very abundant on the earth's continental crust, after feldspar. It is a very hard mineral that crystallizes in the hexagonal system.
<u>It cannot be scratched by a copper penny and also cleavage is absent. They are the most stable rocks that resist weathering and erosion</u>.
Thus, it is a very important mineral that forms the majority of sedimentary igneous and metamorphic type of rocks.
The answer is c I believe I’m not sure the answer aren’t clear
