Answer:
<u>A common element among all the river valley civilizations was irrigation systems that moved water to crops and settlements</u>
Explanation:
- <u>River Valley civilizations where the civilizations that were found on the banks of the river like the Mesopotamia ,Indus valley civilization.</u>
- <u>These civilization where agriculture based civilization as they depended on river for drinking water and irrigational activities</u>
Answer: The genetic content in non-homologous chromosomes would be different.
Explanation:
Homologous chromosomes have the same length, share the same position of centromere and the same types and location of genes. If two chromosomes of a species are the same length and have similar centromere placements and yet are not homologous, the genetic content would be different.
My answer would be "Earthquakes happen along cracks in the earth's surface, called fault lines, and can be felt over large areas"
The answer is C.... Hope this could help
I would say C or D
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