Question

23 multiple choice 1 point
excess nutrients trigger:
○ algal blooms
○ earthquakes
○ acid rain
○ hurricanes

24 multiple choice 1 point
oxygen is depleted when:
○ hurricanes blow offshore
○ bacteria decompose dead plankton
○ boats stir the water
○ fish consume algae

Explanation:

Question 23

Excess nutrients (like nitrogen, phosphorus) in water bodies promote rapid growth of algae. Earthquakes are geological, acid rain is from air pollutants, hurricanes are atmospheric. So excess nutrients trigger algal blooms.

Bacteria decomposing dead plankton use oxygen in the process (respiration), depleting it. Hurricanes blowing offshore, boats stirring water, or fish eating algae don't deplete oxygen like bacterial decomposition of organic matter.

Answer:

A. Algal blooms

Question 24