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''Let nature be your teacher''
William Wordsworth, poet, 1770-1850

''Joy in looking and comprehending is nature's most beautiful gift''
Albert Einstein, physicist, 1879-1955

Tuesday, 25 December 2012

Invasive species - Himalayan Balsam

Level: Advanced / C1

Invasive species are a big problem all over the world. But here is an encouraging story of a project to control one such species in Wales.
Read the article and answer the following questions:
1) When did the North Wales Wildlife Trust start to control Himalayan Balsam?
2) The river Alyn flows into which other river?
3) Why is Himalayan Balsam relatively easy to control?
4) What problems does the Signal Crayfish cause?
5) Which other plants are mentioned in the article?


Answers below!





ANSWERS!


1) 2009
2) The river Dee
3) It can be easily uprooted
4) It carries a disease, it burrows into river banks and it eats salmon eggs
5) Japanese Knotweed, Giant Hogweed


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