So-Called "Dead Zones" in Coastal Oceans Are Associated with Nutrient

question 15

Multiple Choice

So-called "dead zones" in coastal oceans are associated with nutrient runoff and oxygen-depleted bottom waters. What causes the oxygen depletion?

• A)Nutrient runoff causes population growth of cyanobacteria and algae, which consume oxygen via aerobic respiration.
• B)Nutrient runoff causes population growth of cyanobacteria and algae which, in turn, support the growth of fish populations. Fish consume oxygen via aerobic respiration.
• C)Nutrient runoff causes population growth of algae, which consume oxygen via aerobic respiration.
• D)Nutrient runoff causes algae and cyanobacteria populations to grow. When they die, they are consumed by heterotrophic bacteria that consume oxygen via aerobic respiration.
• E)Nutrient runoff causes the waters to warm, which causes them to lose oxygen.

---

Definitions:

Social Breakdown Syndrome

A theory that attributes mental illness to the breakdown of societal support and community structures, leading to isolation and dysfunctional behavior.

Institutional Deterioration

The process by which institutions decline in effectiveness, quality, or health, often due to mismanagement or neglect.

Milieu Therapy

A form of therapy that utilizes the environment, including people and activities, as part of treatment to influence behavior and improve mental health.

Mutual Respect

The recognition and appreciation of the value and rights of others, reflecting a foundational aspect of healthy relationships and social interactions.