ACTIVITY 389: Read the text
below. Use the words on the right to form a word (a noun,
adjective or adverb) that fits in the blank space in the same
line. The first word is already done for you. Then check the
is estimated that there are 250,000 flowering plants in
but thousands of these are still unknown. The
are home to half of the earth's plant species.
an area of rainforest the size of Austria is being
day five plants become extinct. This is worrying
many medicines are based on plants.
example, worldwide leukaemia owe their
to chemicals from the flower of the rosy periwinkle; and
during operations thanks to the
the people sometimes take something
first found in
willow bark and now known as aspirin.
knows what as yet weapons against cancer, heart
disease or AIDS are being by the ruin of the world
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