Chapter 47

The Northern Hemisphere is most tilted toward the sun in __________. a. spring b. summer c. autumn d. winter

Warm air __________ and it holds ___________ water than cold air. a. sinks; less b. rises; less c. sinks; more d. rises; more

A rain shadow is a reduction in rainfall __________. a. on the inland side of a coastal mountain range b. during an El Niño event c. that results from global warming

The Gulf Stream is a current that flows __________ along the __________ coast of the United States. a. north to south; east b. north to south; west c. south to north; east d. south to north; west

__________ have a deep layer of humus-rich topsoil. a. Deserts b. Grasslands c. Rain forests d. Seamounts

Biome distribution depends on __________. a. climate b. elevation c. soils d. all of the above

Grasslands most often are found __________. a. at \(30^{\circ}\) north and south b. at high altitudes c. in interior of continents d. all of the above

Permafrost underlies __________. a. arctic tundra b. alpine tundra c. boreal forest d. all of the above

Warm, still water holds ____________ oxygen than cold, fast-flowing water. a. more b. less

Chemoautotrophic bacteria and archaea are the primary producers for food webs __________. a. in mangrove wetlands b. at seamounts c. on coral reefs d. at hydrothermal vents

Corals rely on symbiotic ____________ for sugars. a. fungi b. amoebas c. dinoflagellates d. green algae

What biome borders on boreal forest? a. savanna b. taiga c. tundra d. chaparral

Unrelated species in geographically separated parts of a biome may resemble one another as a result of __________. a. morphological divergence b. morphological convergence c. resource partitioning d. coevolution

Match the terms with the most suitable description. $$\begin{array}{cc}\text{__________ tundra} && \text {a. broadleaf forest near equator}\end{array}$$ $$\begin{array}{cc}\text{__________chaparral} && \text {b. partly enclosed by land; where fresh water and seawater mix}\end{array}$$ $$\begin{array}{cc}\text{__________ desert }&& \text {c. African grassland with trees}\end{array}$$ $$\begin{array}{cc}\text{__________savanna} && \text {d. low-growing plants at high latitudes or elevations}\end{array}$$ $$\begin{array}{cc}\text{__________ estuary}&& \text {e. dry shrubland}\end{array}$$ $$\begin{array}{cc}\text{__________boreal forest } && \text {f. at latitudes \(30^{\circ}\) north and south}\end{array}$$ $$\begin{array}{cc}\text{__________ prairie}&& \text {g.mineral-rich, superheated water supports communities}\end{array}$$ $$\begin{array}{cc}\text{__________tropical rain forest} && \text {h. conifers dominate}\end{array}$$ $$\begin{array}{cc}\text{__________ hydrothermal vents}&& \text {i. North American grassland}\end{array}$$