History

29 06, 2017

What are nomads? Definition and examples

By |2017-06-29T23:17:42-07:00June 29th, 2017|Government, History|Comments Off on What are nomads? Definition and examples

Khoisan painting at Springfontein, Zimbabwe Nomads are people who travel around from place to place without having one settled place where they live. Many are hunters and gatherers like the [...]

26 06, 2017

What are sedimentary rocks? Shale and limestone

By |2018-10-03T09:50:54-07:00June 26th, 2017|Geology, History|Comments Off on What are sedimentary rocks? Shale and limestone

Sedimentary rocks: Limestone cliffs in Saudi Arabia Before sedimentary rocks When the Earth was first forming, about six billion years ago, there weren't any sedimentary or metamorphic rocks. The only [...]

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