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What does the Greek word "Eutrophos", from which 'Eutrophication' is derived, mean?

AWell-nourished

BPolluted water

CDead water

DOxygen-depleted

Answer:

A. Well-nourished

Read Explanation:

  • The BOD value of clean water is below 5 ppm.

  • The BOD value of polluted water is more than 17 ppm.

  • Nutrient-rich water bodies lead to excessive plant growth, resulting in oxygen depletion, which kills aquatic life and leads to a loss of biodiversity. This phenomenon is known as Eutrophication.

Related Questions:

Which of the following statements is incorrect regarding the Periyar River's historical and economic importance?

  1. The Periyar River is referred to as 'Choorni' in Kautilya's Arthashastra.
  2. Shankaracharya mentioned the Periyar River as 'Poorna'.
  3. Approximately 25% of Kerala's industry is concentrated along the banks of the Periyar.
  4. Pattanam, Kerala's first multi-disciplinary excavation site, is located on the banks of the Bharatpuzha River.

    Which of the following statements accurately describe the Pamba river's flow?

    1. The Pamba river flows through Pathanamthitta, Idukki, and Alappuzha districts.
    2. The Pamba river's course is limited to Pathanamthitta and Idukki.
    3. Alappuzha is not a district through which the Pamba river flows.

      Which of the following statements about the Neyyar River is correct?

      1. The Neyyar River originates from the Agasthyamala in the Western Ghats.
      2. It is the northernmost river in Kerala.
      3. The major tributaries of Neyyar are Kallar and Karavaliar.
      4. Marakunam Island is situated on the banks of the Neyyar River.

        Identify the false statement regarding the Pamba River.

        1. The Pamba River is known as 'Dakshina Bhagirathi'.
        2. The river flows through Pathanamthitta, Idukki, and Alappuzha districts.
        3. The Sabarigiri project is located on the Pamba River.
        4. The Pamba River flows into the Arabian Sea directly.
          കരിമ്പുഴ എന്ന് അറിയപ്പെടുന്ന കോഴിക്കോട് ജില്ലയിലെ പുഴ ഏതാണ് ?