Question 1 - 5
Choose appropriate options A, B or C.
1.
Which topics does the speaker say he will talk about first?
how to limit the dioxins we consume
the origin and effects of dioxins
why people in the US don't know about dioxins
2.
The 'Dirty Dozen' is a group of chemicals which is very
dangerous to the environment.
instrumental in harming food production.
common in nature.
3.
Dioxins can be created by a number of human activities including
the use of chemical pesticides on farms.
the burning of trash.
the burying garbage.
4.
Most of human exposure to dioxins
is from the food they consume.
comes from contaminated soil.
results from handling pesticides and herbicides.
5.
High levels of dioxins in poultry
were traced back to Belgium.
were caused by the food given to animals.
were the result of hazardous waste.
Question 6 - 10
Write ONE WORD ONLY for each answer.
The symbiotic relationships involving cleaner fish
STEP 1
Wrasse fish get together 6.26...... the reef and wait for other fish.
STEP 2
Wrasse fish come towards the moray eels when they are 7.27......
STEP 3
The cleaner fish eat parasites and 8.28...... from the eels' gills.
STEP 4
Dead 9.29..... are picked off the eels by the wrasse fish.
STEP 5
The eels allow the wrasse fish to clean the interiors of their 10.30.....
. . .
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