If you are located at 57°E, what is the coordinate straight through the Earth on the opposite side? O 57°W
O 157°E
O 123°W
O 57°E

Witch layer of the atmosphere has the most air pressure

These factors threaten north americas ecosystems

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.