Answer:
D. All of the above
Explanation:
Graphic relations, rhythmic relations, spatial relations are all editing techniques.
The correct answer is:
Many settlers were unable to farm the Great Plains due to the challenges of working with the land.
The Great Plains land was not good for farming since it was very dry and flat. Settlers had to learn how to farm in that soil held together by grassroots, called sod. Settlers had to break through the sod to plant crops. Since there was not a lot of wood, they used sod to build homes.
Answer:
Around 1.8 million years ago, Homo erectus migrated out of Africa via the Levantine corridor and Horn of Africa to Eurasia. This migration has been proposed as being related to the operation of the Saharan pump, around 1.9 million years ago.
Explanation:
I'm forest ecosystem is the answer to the question
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