Answer:
Following the conquest of North Africa by Muslim Arabs in the 7th century CE, Islam spread throughout West Africa via merchants, traders, scholars, and missionaries, that is largely through peaceful means whereby African rulers either liked the religion or converted to it themselves.
Explanation:
Explanation:
(a)
There is inverse relation between concentration of aluminium and pH value and it can lead to aluminium toxicity. In this case it will dominate in the form of Hydroxy- aluminium, Al³⁺ cation and polynuclear species.
(b)
Various minerals are brought to the soil during its formation . As we know the pedogenesis process starts due to erosion of the rocks and rocks contain various minerals, of which aluminium is also a part. With time, aluminium gets dissolved in water and the soil and as the rocks become soil after going through various processes like traction, solution etc, it gets aluminium ions also with it.
Answer:
a) Conservation
Explanation:
In psychology, Jean Piaget developed the Theory of Conservation, which refers to the <u>thinking capacity of an individual that enables him / her to comprehend that even after the physical appearance of an object is modified, like its shape or size, it remains the same. </u>
According to Jean Piaget, this capacity is not developed until the concrete operational stage of a person, which starts around age seven.
Therefore, the correct answer is a) Conservation.
Bodies of water often were used to create borders EX: in the eastern united states the states borders are rivers because it is easier than making imaginary borders
