Please select the correct sequence of steps involved in the creation of a dead zone in a water body.
1) Heterotrophic microbes metabolize the organic compounds synthesized by primary producers.
2) Water becomes hypoxic and toxic algal blooms may occur; animals in the area either flee or die.
3) Water accumulates nutrients as it runs through agricultural, industrial, and urbanized regions.
4) Dissolved O₂ is consumed by metabolic activity of heterotrophs.
5) Excess nitrate and phosphate in nutrient-rich water causes algae and cyanobacteria to flourish.
A) 3; 5; 1; 4; 2
B) 3; 1; 4; 2; 5
C) 1; 3; 4; 2; 5
D) 5; 3; 4; 2; 1
E) 2; 1; 4; 3; 5

Question

Please select the correct sequence of steps involved in the creation of a dead zone in a water body.
1) Heterotrophic microbes metabolize the organic compounds synthesized by primary producers.
2) Water becomes hypoxic and toxic algal blooms may occur; animals in the area either flee or die.
3) Water accumulates nutrients as it runs through agricultural, industrial, and urbanized regions.
4) Dissolved O₂ is consumed by metabolic activity of heterotrophs.
5) Excess nitrate and phosphate in nutrient-rich water causes algae and cyanobacteria to flourish.
A) 3; 5; 1; 4; 2
B) 3; 1; 4; 2; 5
C) 1; 3; 4; 2; 5
D) 5; 3; 4; 2; 1
E) 2; 1; 4; 3; 5

Quizplus · Accepted Answer

The correct sequence starts with water accumulating nutrients from various sources (3), leading to an overgrowth of algae and cyanobacteria due to excess nutrients (5). Heterotrophic microbes then metabolize the organic compounds produced by these primary producers (1), consuming dissolved oxygen in the process (4). This results in hypoxic conditions that can cause toxic algal blooms, forcing aquatic life to either flee or die (2).

Please Select the Correct Sequence of Steps Involved in the Creation