How does a farmer's fertilizer cause a dead zone in the ocean?
Question 10 options:
What is used on land has no interaction with what happens in the ocean.
The run off from the farm brings nitrogen to the ocean. This causes the algae population to grow quickly. When they die the decomposers break them down and use up all the oxygen in the water. If there is no oxygen, nothing can live.
The run off from the farm brings nitrogen to the ocean. This increases the population size of all organisms. The presence of so many organisms, like fish, in a single area causes sharks and other predators to come. When they consume all the organisms in the area, it becomes known as a dead zone.