| 1. The Nazca lines in the desert of Peru form patterns that are only properly __________ from the air. | | |
| 2. Environmental groups in Honduras are fighting to __________ the damage done to forests, plants and animals in that country. | | |
| 3. The Northern Lights are a fascinating __________ which attract viewers from around the world. | | |
| 4. Emily is working on a research project studying the genes of DNA __________ from fruit flies. | | |
| 5. The space probe discovered numerous __________ on Mars that closely resemble dry riverbeds on Earth. | | |
| 6. The doctor __________ a tube in the patient's nose for oxygen. | | |
| 7. A dog's keen sense of smell compensates for his inability to see colours, and enables him to __________ between things. | | |
| 8. In ancient times, it was believed that those who looked upon the green emerald of Isis were __________ a safe trip through the land of the dead. | | |
| 9. She had to take a short course in __________ techniques before going on the 2-week hike. | | |
| 10. Lying about what happened would be totally __________ to her nature. She's one of the most honest people I've dealt with. | | |