Question

What is the major cause of phytoplankton blooms in the Gulf of Mexico?

Answer 1

Answer:

Excessive nutrients from fertilizer run off.  

Explanation:

Scientists have suspected that phytoplankton blooms might be connected to agricultural run-off. They got some evidence from a recent study by comparing the timing of irrigation along the west coast of Mexico and phytoplankton blooms in Mexico’s Sea of Cortez. During the comparison, they had found a close correlation. Phytoplankton blooms occurred in the Sea of Cortez shortly after the irrigation. This happened because of carried fertilizers after irrigation and other agricultural run-offs into the sea.

The bloom detected in the Gulf of Mexico on December 13 might be similarly linked to agricultural run-off.