What is stream gradient of 200 meter and 400 km

The increase of pollutants from in mexico has raised concerns about garage to health and the environment

What body of water is the second cataract of the nile river submerged under

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