What type of rock is formed from sand and sediment that harden over time in horizontal layers?

How are farmers that use no plow farming methods able to improve air quality for the people around the fram

Fertility and mortality rates are higher in more developed nations.

Why did the belgian parliament pass laws to decentralize its government? a. to increase trade with neighboring luxembourg b. to decrease the political power enjoyed by the flemish c. to enable belgium to join the european union d. to reduce tensions between belgium's two main ethnic groups