Why do different parts of cities have different levels of development?

HURRY PLEASE

Northeastern china, north korea, northern japan containing coniferous forests, temperate grasslands, and agriculture, are all part of what climate zone? a. tropical desertb. desertc. humid subtropicald. humid continental

What is a small water source like a stream or brook?

Acharreadas is a popular mexican thing where people display varying skills of horsemanship much like what events in the united states?