ผู้เขียน: Mary V. Santelmann

Nutrients from farms in the Mississippi River Basin are the leading cause of the Gulf of Mexico‘s ”Dead Zone, ” a 5, 000 to 7, 000 square mile region where declining oxygen levels are threatening t …

Nutrients from farms in the Mississippi River Basin are the leading cause of the Gulf of Mexico‘s ”Dead Zone, ” a 5, 000 to 7, 000 square mile region where declining oxygen levels are threatening t …