Which statements about ecosystems are true

The prevailing climatic type in the southeastern part of the usa, western europe, southern brazil and northen argentina is the mid-latitude or: a)humid temperate b)humid cold c)semiarid moderate dry d)summer savanna.

How does central place theory explain patterns in the size and distribution of cities?

After railroads, the next revolution of transportation came with the development of (a) automobile (b) telegraph (c) steam engine