Why are states only allowed to redistrict every ten years?

Explanation:

What is redistricting?

Redistricting is a legally required process that occurs every 10 years in which districts for the U.S. House and state legislatures are redrawn. Once the U.S. Census Bureau releases new population figures for all 50 states (in every year ending in “1”), seats in the U.S. House are handed out accordingly. Some states gain seats, some states lose seats, and some keep the same number of seats. But regardless of whether or not your state gains or loses, new districts for congressional seats and state legislative seats must be drawn to create districts that are equal (or as close to possible) in population.

For example, the state of Nevada has seen explosive population growth in the Las Vegas area over the last decade, and because of this, it will be moving from its current three House seats to four in the 2012 election. Much of that growth occurred in freshman Rep. Joe Heck’s (R-Nev.) Las Vegas-based 3rd district, which has grown from 666,000 residents after the 2000 Census to more than one million people today, and has more people than any other district in the country. His new district, therefore, needs to cut out about 350,000 of those people in order to make it equal with the state’s other three congressional districts. Because of all these changes, the congressional map in Nevada will look significantly different for 2012 than it does now, and Heck and his Nevada colleagues will have significantly different districts to run in.

separate but equal was a legal doctrine in united states constitutional law according to which racial segregation did not violate the fourteenth amendment to the united states constitution, which guaranteed "equal protection" under the law to all people. under the doctrine, as long as the facilities provided to each race were equal, state and local governments could require that services, facilities, public accommodations, housing, medical care, education, employment, and transportation be segregated by race, which was already the case throughout the states of the former confederacy. the phrase was derived from a louisiana law of 1890, although the law actually used the phrase "equal but separate

hope this : d

the answers is b.   environments.