Across
- 3. a region with particular prevailing weather conditions.
- 7. the envelope of gases surrounding the earth or another planet.
- 9. fog or haze combined with smoke and other atmospheric pollutants.
- 10. takes place when a population's per capita growth rate decreases as population size approaches a maximum imposed by limited resources, the carrying capacity
- 13. the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.
- 14. has the opposite effect of El Nino. During La Nina events, trade winds are even stronger than usual, pushing more warm water toward Asia.
- 16. is a colorless, odorless reactive gas comprised of three oxygen atoms. It is found naturally in the earth's stratosphere, where it absorbs the ultraviolet component of incoming solar radiation that could be harmful to life on earth.
- 18. : the factor that limits the reaction rate in any physiological process governed by many variables
- 20. newly exposed or newly formed rock is colonized by living things for the first time.
- 21. refers to a population that is unchanging – it is neither growing, nor declining; the growth rate is zero
- 22. whose rate becomes ever more rapid in proportion to the growing total number or size.
- 25. the action of clearing a wide area of trees.
- 26. s a natural resource that cannot be readily replaced by natural means at a quick enough pace to keep up with consumption
Down
- 1. an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.
- 2. the number or quantity of people or things that can be conveyed or held by a vehicle or container
- 4. has an endless supply such as solar energy, wind energy, and geothermal pressure, Most precious metals are renewable also.
- 5. is an unexpected event, caused by nature, such as an earthquake or flood, in which there is a lot of suffering, damage, or death
- 6. the action of coming to live permanently in a foreign country.
- 8. the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
- 11. all the inhabitants of a particular town, area, or country.
- 12. the process of making an area more urban.
- 15. is the number of people per unit of area, usually quoted per square kilometre or square mile, and which may include or exclude for example areas of water or glaciers.
- 17. 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.
- 19. a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
- 23. 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.
- 24. any of the almost spherical concentric regions of matter that make up the earth and its atmosphere, as the lithosphere and hydrosphere.