‘Dead zone’ growing, killing Oregon’s sea crabs

The video discusses the formation of dead zones near the Oregon coastline, where oxygen levels in seawater drop significantly, causing marine life to either flee or perish. Crabs, unable to escape quickly, often die in large numbers, impacting local fishermen. These dead zones are caused by seasonal winds that bring cold water to the surface, leading to phytoplankton blooms. As these organisms die and decompose, bacteria consume excessive oxygen, exacerbating the problem. Scientists have recorded data indicating a severe season of dead zones in Oregon this year.

Describe the role of phytoplankton in the creation of dead zones.

What evidence do scientists have regarding the severity of dead zones in Oregon this year?