Marion, 10 years old, knew that she was related to the relatives on her mother's side of the family, and also the relatives on her father's side of the family. this system is the usual model in the united states.

This "bilineal" system is the usual model in the united states.

Bilineal system refers to the arrangement of family descent where blood connections and privileges of legacy through both male and female precursors are of equivalent significance. Bilineal descent is framework is following family relationship structure through the two guardians. The most widely recognized frame is respective descent. An arrangement of following descent through both the mother's and father's sides of the family.

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explanation: because you need to reduce the pollution on land,the exhaust fumes will stop,and stop it in water,the oil that is in the oceanharms the fish   sorry if you   have been waiting long