The biggest economic challenge that effects North Africa and Southwest Asia is their economic dependence on oil and gas sale and it's price. This is what drives their economies, and is pretty much the only significant income they have. So any disturbance in the price of this two products is affecting them significantly. The world is also moving towards greener fuels and renewable energy, which puts this regions in a very bad position in the long term. So if they want to keep their economic stability they will have to follow the world trends and use their natural advantages to be competitive in the world market, or other wise they will crumble economically.
Natural borders tend to change due to climate and other causes. Natural borders that are formed around mainly rivers and lakes, to some extent ocean have the largest effects on people. An example of river one is the Natural border of the Rio granda river that borders the states of Texas and Mexico. The change in the Rio granda river caused texas to lose 367 acres of land to Mexico and caused commotion among the US citizens now living in Mexico due to the change of the River. Another example is the flooding of holand in the Netherlands in the past. Due to rising sea levels areas of Holand netherlands are being flooded which effects people and places
Answer:Unpredictable
Explanation: Climate changes every second. For example it could be 70 Fahrenheit at 10:00 am but at 10:03 it could be 80 Fahrenheit
The answer is temperature, the nature of the solvent, effect of ion type
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