Detailed explanation and options for the selected question.
What is the primary cause of algal blooms in aquatic ecosystems?
A.
Deforestation
B.
Introduction of invasive species
C.
Nutrient enrichment from agricultural runoff
D.
Increase in predator population
Explanation:
Nutrient enrichment, particularly from agricultural runoff containing nitrogen and phosphorus, leads to algal blooms. Deforestation, invasive species, and predators are not primary causes.