Sahara is a desert and deserts are hard to cross. Sahara is especially bad and potentially deadly: it's very dry and there is no water to be found for miles.
Therefore it was a barrier and it has isolated South Africa from European influence for a long time. (until the time of European explorations)
"The transaction of two pairs of corresponding vertices (A to X and C to Z) have the same rise over run." Therefore, option (B) is the correct condition.
<h3>What conditions apply to congruent triangles?</h3>
SSS denotes that two triangles are congruent if all three sides of one triangle are equal to the three equivalent sides of the other triangle.
Triangle congruence: Two triangles are said to have been congruent if all three of their sides are equal and all three of their angles are equal in size.
Check out the link below to learn more about congruent triangles;
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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.
Katrina made landfall as a Category 3 storm near Buras-Triumph, Louisiana, and once more near the Mississippi/Louisiana border. Katrina progressed northward through the central United States and finally dissipated near the Great Lakes on August 31, when it was absorbed by a cold front.