Multiple choice

Continuous sewage flow into a stream would lead to

  1. Eutrophication

  2. Algal Bloom

  3. Depletion of oxygen

  4. Increase in temperature

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Continuous sewage flow introduces organic matter and nutrients that stimulate excessive bacterial growth. These bacteria consume oxygen for decomposition, leading to oxygen depletion. Eutrophication and algal blooms are earlier stages; oxygen depletion is the direct consequence that harms aquatic life.