Final answer:
Phosphorus and nitrogen, when introduced to aquatic ecosystems, can lead to heavy algal growth due to their function as key nutrients for algae. This can significantly impact the aquatic ecosystem, depleting oxygen levels and potentially harming other aquatic life.
Step-by-step explanation:
Among various chemicals, the introduction of phosphorus and nitrogen into aquatic ecosystems often results in algal growth. These chemicals are key nutrients for algae and when present in increased amounts, lead to eutrophication - a process characterized by the overgrowth of algae or 'algal blooms'. These algal blooms can significantly impact the aquatic ecosystem, depleting oxygen levels and harming other aquatic life.
Learn more about Algal Blooms