Question

analyze the image. identify the specific type of pollution shown. name two primary sources mentioned in the lesson that create this condition.

1. cause & effect aquatic ecosystems

the lesson described a specific chain reaction caused by agricultural runoff. reorder the events below to show the correct sequence of how pollution damages aquatic life.

Explanation:

For the first part (Analyze the Image):

The bottom image shows smokestacks emitting smoke, so the pollution type is air pollution. Primary sources of air pollution (from typical lessons) are industrial emissions (like factories shown) and vehicle exhaust (not shown but a common source) or burning fossil fuels (factories burn fossil fuels for energy).

Agricultural runoff (fertilizers, pesticides) enters water. First, nutrients (like nitrogen, phosphorus) from runoff cause algal blooms. Then, algae die and decompose, using up dissolved oxygen. Then, aquatic organisms (fish, etc.) suffer from oxygen depletion (hypoxia) and may die. So the sequence starts with agricultural runoff adding nutrients, then algal bloom, then decomposition, then oxygen depletion, then aquatic life damage.

Answer:

Pollution type: Air Pollution. Two primary sources: Industrial emissions (from factories like in the image), Burning of fossil fuels (factories burn coal/oil for energy).

For the "Cause & Effect Aquatic Ecosystems" part (assuming events were given but not listed here, a general approach):