1 A) the tilt of the Earth as it orbits the sun. B) topography. C) the species diversity in the region. D) proximity to a body of water. 2 A) at about 30¬º north and south latitude B) near the equator C) at about 60º north and south latitude 3 A) variations in solar reception B) the tilt of the earth's axis as it rotates around the sun C) the spinning of the earth on its axis D) permafrost 4 A) the distribution of land masses and oceans. B) variations in solar radiation reception. C) topographical features. D) species composition in the region. 5 A) vernal equinox B) winter solstice C) autumnal equinox D) summer solstice 6 A) Savanna B) Temperate rain forest C) Tropical seasonal forest D) Tropical rain forest 7 A) a characteristic group of animals. B) definitive demarcations. C) specific environmental conditions. D) a characteristic group of plants. 8 A) tropical rainforest B) cold northern coniferous forest C) temperate grassland D) tundra 9 A) desert B) tropical seasonal forest C) tropical rain forest D) semidesert 10 A) permafrost B) conifers C) deciduous trees D) epiphytes 11 A) desert B) savannas C) temperate deciduous forests D) shrublands 12 A) Mesopelagic zone, bathypelagic zone, euphotic zone, epipelagic zone B) Euphotic zone, epipelagic zone, mesopelagic zone, bathypelagic zone C) Bathypelagic zone, epipelagic zone, mesopelagic zone, euphotic zone D) Epipelagic zone, euphotic zone, bathypelagic zone, mesopelagic zone 13 A) epicotyl B) epidermis C) epiphyte D) epiglottis 14 A) Allow much sunlight to filter through their canopy B) Become very tall: 15-50 meters or more C) May be supported by lianas or woody vines D) Have broad leaves 15 A) Old-growth forest of the Pacific Coast B) Arctic tundra C) African savanna D) Shrublands 16 A) Drought in India and Africa B) Hurricanes on the east coast of the United States C) A bountiful Peruvian harvest of anchovies off the coast of Peru D) Upwelling of cold water to the surface off the coast of South America 17 A) an absence of living things B) numerous phytoplankton C) hydrothermal vents that support communities of organisms D) a variety of seaweed 18 A) Deep lakes are stratified in summer and winter in the temperate zone. B) Surface waters receive nutrients from deep waters during spring and fall overturn. C) The surface layer is called the hypolimnion. D) Ice formation begins at the top. 19 A) Profundal zone B) Littoral zone C) Limnetic zone 20 A) benthos B) zooplankton C) phytoplankton D) consumers
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