I'd have to say gas because it usually doesn't change at all
Well it is important to know the geography of all places but u might want to so u know the language, traditions, and where is where if u r visiting.
The answer is: [A]: troposphere .
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Economic opportunities seems to be the driving factor for migration nowadays. An example of a group of migrants migrating from areas with a lack of economic opportunities to areas with more economic opportunities are Mexican immigrants seeking job opportunities.
Traditional Maasai society is organized according to age groups known as sets.
