Multiple choice

Agricultural sources are the cause of

  1. greenhouse effect

  2. toxicity in rivers

  3. eutrophication

  4. change in pH of rivers
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Agricultural sources increase the level of nitrates and phosphates in water bodies. It causes rapid algal growth, making water oxygen deficient, leading to suffocation of aquatic life. This is called eutrophication.

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