Upper part of sea/aquatic ecosystem contains
Correct answer: A. Plankton
- A. Plankton
- B. Nekton
- C. Plankton and Nekton
- D. Benthos
Explanation
Planktons are passively floating in upper water, nektons are actively swimming and benthos lead sedentary life upon the sea bottom. Planktons are producers and are present in large numbers.
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Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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