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One of the main reasons societies settled along rivers in the neolithic era was because a) the village elders demanded it. b) the land there was more valuable. c) it was more safe and secure there. d) it provided irrigation for farming.

Avast plain of rolling hills are actually folds of monoclines domes and basins anticlines and synclines horsts and grabens

Generally, around the globe there are 105 boys born for every 100 girls. however, recently in some countries, this ratio has been altered with a much larger proportion of boys being born in some countries. the primary reason for this shift to a higher proportion of male births has been