5 Read some more sentences summarising information from the article. What type of word is needed to fill each of the gaps? Find the section of the article where each piece of information is given. Can you find ONE WORD in the section which could be used to complete each gap? a) Ragweed is an invasive plant capable of producing a huge quantity of pollen in a single year. b) Scientists are concerned at the issues raised by the at which the plant is spreading on certain types of land. c) Sneezing and irritated eyes are symptoms caused by ragweed in common with other of allergenic plants. d) Ragweed pollen, which affects 75% of American hay fever sufferers, is produced late in the year, prolonging the hay fever . e) Researchers at the Un