Across
- 1. all the inhabitants of a particular town, area, or country.
- 3. the weather conditions prevailing in an area in general or over a long period.
- 7. an irregularly occurring and complex series of climatic changes affecting the equatorial Pacific region and beyond every few years, characterized by the appearance of unusually warm, nutrient-poor water off northern Peru and Ecuador, typically in late December.
- 8. surface runoff of rainwater created by urbanization. This runoff is a major source of flooding and water pollution in urban communities worldwide. Impervious surfaces are constructed during land development
- 11. Chlorofluorocarbon. a family of chemicals composed primarily of carbon, hydrogen, chlorine, and fluorine. Used principally as refrigerants and industrial cleansers. Chlorofluorocarbons have the tendency to destroy the Earth's protective ozone layer.
- 14. the action of clearing a wide area of trees.
- 15. a substance that pollutes something, especially water or the atmosphere.
- 18. the action of coming to live permanently in a foreign country.
- 19. The crude birth rate in a period is the total number of live births per 1,000 population divided by the length of the period in years.
- 20. the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
- 21. population expansion decreases as resources become scarce, leveling off when the carrying capacity of the environment is reached, resulting in an S-shaped curve.
- 24. any of the almost spherical concentric regions of matter that make up the earth and its atmosphere, as the lithosphere and hydrosphere.
- 25. is water from farm fields due to irrigation, rain, or melted snow that flows over the earth that can absorb into the ground, enter bodies of waters or evaporate.
Down
- 2. are biotic, like food, mates, and competition with other organisms for resources.
- 4. the act of leaving one's own country to settle permanently in another; moving abroad.
- 5. Smog is air pollution that reduces visibility. The term "smog" was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial areas, and remains a familiar sight in cities today.
- 6. A mortality rate is a measure of the frequency of occurrence of death in a defined population during a specified interval. Morbidity and mortality measures are often the same mathematically; it's just a matter of what you choose to measure, illness or death.
- 9. a layer in the earth's stratosphere at an altitude of about 6.2 miles (10 km) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.
- 10. the envelope of gases surrounding the earth or another planet.
- 12. the natural home or environment of an animal, plant, or other organism.
- 13. The total fertility rate, sometimes also called the fertility rate, absolute/potential natality, period total fertility rate, or total period
- 16. An artificial reef is a human-created underwater structure, typically built to promote marine life in areas with a generally featureless bottom, to control erosion, block ship passage, block the use of trawling nets, or improve surfing.
- 17. process in which there is an increase in the number of people living and working in a city or metropolitan area. urban sprawl.
- 22. a colorless unstable toxic gas with a pungent odor and powerful oxidizing properties, formed from oxygen by electrical discharges or ultraviolet light. It differs from normal oxygen (O2) in having three atoms in its molecule
- 23. La Niña is a coupled ocean-atmosphere phenomenon that is the colder counterpart of El Niño, as part of the broader El Niño–Southern Oscillation climate pattern.