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Across 8. Area with low rainfall, whose animal rate of evaporation exceeds its annual rate of precipitation; can support cacti and some grasses and animal species such as snakes and lizards 10. Material deposited by water, wind, or glaciers 13. Tiny marine or freshwater organisms that serve as a food source for many fish species; often autotrophic 14. Biome characterized by deciduous and evergreen trees, a dry season, and animal species that include monkeys, elephants, and Bengal tigers (3 Words) 16. Biome characterized by grasses and scattered trees, and herd animals such as zebras and antelopes (2 Words) 19. Stable, mature ecological community with little change in the composition of species (2 Words) 20. Unique, transitional ecosystem that supports diverse species and is formed where freshwater and ocean water merge 21. Biotic or abiotic that restricts the number, distribution, or reproduction of a population within a community (2 Words) 24. orderly change that occurs in a place where soil remains after a community of organisms has been removed (2 Words) 27. Biome characterized by small trees and mixed shrub communities 28. Hot, wet biome with year-round humidity; contains Earth's most diverse species of plants and animals (3 Words) 29. Deepest, very cold region of the open ocean (2 Words) 30. Atmospheric conditions such as temperature and precipitation at a specific place and time 31. Open-ocean zone shallow enough for sunlight to penetrate (2 Words)

Down 1. Water-saturated land area that supports aquatic plants 2. Biome characterized by fertile soils with a thick cover of grasses 3. Group of interacting populations that live in the same geographic area at the same time 4. Well-lit, open-water area of a lake or pond (2 Words) 5. Area of a lake or pong closest to the shore (2 Words) 6. Ocean-floor area consisting of sand, silt, and dead organisms (2 Words) 7. Biome south of the tundra with dense evergreen forests and long, cold, dry winters (2 Words) 9. Biome south of the boreal forest characterized by broad-leaved, deciduous trees, well-defined seasons, and average yearly precipitation of 75-159 cm (2 Words) 11. Process by which one community replaces another community because of changing abiotic and biotic factors (2 Words) 12. Deepest, coldest area of a large lake with little light and limited biodiversity (2 Words) 15. Average weather conditions in a specific area, determined by latitude, elevation, ocean currents, and other factors 17. Establishment of a community in an area of bare rock or bare sand, where no topsoil is present (2 Words) 18. Narrow band of shoreline where the ocean and land meet that is alternately submerged and exposed and is home o constantly changing communities (2 Words) 22. Organism's ability to survive biotic and abiotic factors 23. Open-ocean zone through which sunlight cannot penetrate (2 Words) 25. Treeless biome with permanently frozen soil under the surface and average yearly precipitation of 15-25 cm 26. Distance of a point on Earth's surface north or south of the equator