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Across 2. a factory where manual workers are employed at very low wages for long hours and poor conditions 5. a large area covered with trees 6. the production of gas or radiation 10. existing between nations

Down 1. clear an area of forests and trees 2. a kind or sort 3. the act of using up a resource 4. the presence in the environment of a substance which has harmful effects 7. a branch of biology that deals with the relation of organisms to one another 8. the action of buying and selling goods and services 9. the weather conditions prevailing in an area in general