Across:7. | a portable, usually battery-powered microcomputer small enough to rest on the user's lap. | 9. | causing great distress or injury; ruinous; very unfortunate; calamitous | 12. | a species at risk of extinction because of human activity, changes in climate, changes in predator-prey ratios, etc. | 15. | a vast computer network linking smaller computer networks worldwide | 16. | a Web site containing the writer's or group of writers' own experiences, observations, opinions, etc., and often having images and links to other Web sites. | 18. | an atmospheric heating phenomenon, caused by short-wave solar radiation being readily transmitted inward through the earth's atmosphere but longer-wavelength heat radiation less readily transmitted outward, owing to its absorption by atmospheric carbon dioxide, water vapor, methane, and other gases; thus, the rising level of carbon dioxide is viewed with concern. |
| | Down:1. | a tropical forest, usually of tall, densely growing, broad-leaved evergreen trees in an area of high annual rainfall. | 2. | precipitation, as rain, snow, or sleet, containing relatively high concentrations of acid-forming chemicals, as the pollutants from coal smoke, chemical manufacturing, and smelting, that have been released into the atmosphere and combined with water vapor: harmful to the environment. | 3. | the act or process of becoming extinct; a coming to an end or dying out | 4. | heat radiation from the sun converted into electrical power | 5. | a connected group of pages on the World Wide Web regarded as a single entity, usually maintained by one person or organization and devoted to a single topic or several closely related topics. | 6. | the layer of the upper atmosphere where most atmospheric ozone is concentrated | 8. | a very small, portable, solid-state hard drive that can be inserted into a USB port for storage and retrieval of data. | 10. | a sudden and widespread disaster | 11. | a digital camera whose images are transmitted, often in real time, over the World Wide Web. | 13. | an increase in the earth's average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. | 14. | to transfer (software, data, character sets, etc.) from a distant to a nearby computer, from a larger to a smaller computer, or from a computer to a peripheral device. | 17. | operating under the direct control of, or connected to, a main computer. |
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