Scientists discovered that runoff from some plant fertilizers can produce algal blooms that negatively affect ocean ecosystems. Which of the following options provides evidence of how algal blooms harm ocean ecosystems?(1 point)

Question

Responses

Excessive nutrients from fertilizer runoff increase the amount of plant and algae growth in water bodies.
Excessive nutrients from fertilizer runoff increase the amount of plant and algae growth in water bodies.
Rainfall and irrigation can cause excess water to enter the soil, resulting in excess fertilizer runoff that ends up in the ocean.
Rainfall and irrigation can cause excess water to enter the soil, resulting in excess fertilizer runoff that ends up in the ocean.
Large algal blooms rapidly decompose, contributing to increased CO2 and low-oxygen water that can reduce fish habitats.
Large algal blooms rapidly decompose, contributing to increased CO 2 and low-oxygen water that can reduce fish habitats.
Authorities warn the public not to let their dogs swim in water bodies with algal blooms since they could get sick from algae exposure.

Answer 1

The option that provides evidence of how algal blooms harm ocean ecosystems is:

Large algal blooms rapidly decompose, contributing to increased CO2 and low-oxygen water that can reduce fish habitats.

This response directly addresses the negative impact of algal blooms on ocean ecosystems by explaining how their decomposition affects oxygen levels and contributes to conditions that can harm marine life, such as fish habitats.