Dave's ESL Cafe's Student Discussion Forums

[jasonlulu_2000]

Water-borne diseases continue unchecked. In areas where it�s hot and damp, water hyacinths choke off lakes, dams and other sections of the river, making it difficult for fishing and other businesses to move forward.

According to the context, the underlined word refers to _________.
A. animals B. plants

If I don't know the word, I cannot find any clue from this passage to help me guess the underlined word is a plant or an animal. Can you point any indication out for me?

Thanks

[pugachevV]

The water hyacinth (Eichhornia Crassipes )is an aquatic plant that can be free floating or rooted in mud. It can form a floating mat up to 2 metres thick, It has attractive flowers. It is mostly considered to be a nuisance species.