The acidification of oceans is increasing. Why is this phenomenon a cause of concern?
- The growth and survival of calcareous phytoplankton will be adversely affected.
- The growth and survival of coral reefs will be adversely affected.
- The survival of some animals that have phytoplanktonic larvae will be adversely affected.
- The cloud seeding and formation of clouds will be adversely affected.
Detailed Explanation:
✅ Statement 1 – Correct: Calcareous phytoplankton (like coccolithophores) need carbonate ions to build calcium carbonate shells; ocean acidification reduces these ions, impairing their calcification, growth, and survival.
✅ Statement 2 – Correct: Coral reefs are made of calcium carbonate; increased acidity lowers the saturation state, making it harder for corals to build skeletons and can cause reef dissolution.
✅ Statement 3 – Correct: Many marine invertebrates (mollusks, echinoderms) have phytoplanktonic larvae sensitive to seawater chemistry changes; acidification impairs their development and shell formation, increasing mortality.
❌ Statement 4 – Incorrect: While acidification may reduce dimethyl sulfide (DMS) production affecting cloud condensation nuclei, this is an indirect climatic feedback, not a primary direct concern for ocean ecosystems.
Question 9 of 9 Water Pollution
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Which of the following can be found as pollutants in the drinking water in some parts...
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