7. Stranglers are so called because they ________ by blocking the sunlight and competing for the nutrients.
8. Since rainforest bacteria and trees depend on each other for life, the relationship they form is termed ________.
9. Plant species are dispersed over a large area with the help of ________.
10. As we are still ignorant of millions of unique life forms in the rainforest, deforestation can be compared to the destruction of ________.
Unit 1
1. N 2. Y 3. NG 4. N
5. guaranteed 6. Internet access
7. two customer satisfaction programs / a customer hotline and a customer call-back program
8. higher prices of their pizzas
9. reckless driving by their drivers
10. the same
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