Which floating fern damages aquatic ecosystems by outgrowing and replacing native plants that provide food and habitat for native animals and waterflow?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Giant salvinia
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Giant salvinia (Salvinia molesta) is an invasive floating aquatic fern.
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It spreads rapidly, forming dense mats that block sunlight and reduce oxygen in the water.
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It outgrows native aquatic plants, affecting food and shelter for native animals.
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It disrupts water flow, clogs waterways, and harms fisheries and irrigation systems.
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It is considered a serious aquatic weed and environmental threat.