How did man-made levees hurt the coastal regions of Louisiana? Select the two answers that are correct.
They limited how cities could grow.
They allowed salt water to enter freshwater marshes.
They stopped the Mississippi River from depositing sediment on the coast.
They prevented natural levees from growing.
They carried pollution into the coast.
Imagine there is an oil spill in Lake Charles. Which of the following industries could you predict would not be affected?
To manage shipping on the many ports on the Mississippi River, engineers must keep it from
What is one important step in marsh creation?
putting canals through the marsh
removing the grass from the area
making sure the land is higher than the surrounding land
making sure the land is lower than the surrounding land