Yes. The ancient Egyptians did create a calendar that had 10 days a week. hope this helps :)
A glass bottle would sink instead of floating if there was no air inside of it
1. From all those aforementioned, a sudden decline in unemployment <span>is not a factor contributing to poverty in Africa. The answer to your question is B.
2. </span>People living in Chad, on average, make the least amount of money. The answer to your question is D.
I hope that this are the answers that you were looking for and it has helped you.
Answer:
The correct answer is B. They are a collection of minerals or a body of glass.
Explanation:
The study of rocks needs the observation of their characteristics; its characteristics depend on the properties of the minerals that compose it, its relative amounts and the way in which these were joined to originate the rock. Texture is the external appearance of any rock. It depends on the shape, size and internal arrangement of mineral crystals. Each of these characteristics maintains its specific properties (chemical and physical) in the rock as a whole.
In a rock we can distinguish two types of minerals:
Essential minerals. They are the ones that constitute the nature of the rock and give it its characteristics and properties for being in greater proportion. The lack of one of them would result in the formation of a different rock with different properties.
Accessory minerals These are minerals that appear occasionally in very low proportions within the typical composition of a particular rock. Its presence does not alter the basic characteristics of the rock.
