Describe the historical circumstances that led to the establishment of settled societies in the Indus Valley until the start of the classical age in India.

Answersocial classes;

2pi more meters because you find the circumference which is 6pi and 4pi and subtract it and you get 2pi

Ibelieve its c.  that to me seems like the closest answer 

Conditions are more like living on  land  for creatures in the upper part of the intertidal, which is only covered with  water  at extreme high tide, so life is easier on land. conditions are more like living in the ocean for creatures in the lower part of the intertidal which is only exposed to air at extreme low tide. so basically it both worlds of land and ocean.