Eutrophication is a process that involves

Eutrophication is a process that involves

  1. the release of harmful chemicals into water bodies
  2. the formation of oil slicks on water surfaces
  3. the excessive growth of algae due to nutrient enrichment ✓
  4. the presence of heavy metals in water

Explanation

Eutrophication happens when too many nutrients enter water. Algae grows rapidly and covers the surface. When algae dies, bacteria use up oxygen.

This kills fish and other water life. Fertilizer runoff causes most eutrophication problems.

Remember: Eutroph means well-nourished. Too much food for algae creates environmental damage.