Chapter 34

Match each description on the left with the correct biome on the right. The most complex and diverse biome a. chaparral b. savanna c. taiga d. temperate broadleaf forest e. temperate grassland f. tropical rain forest g. arctic tundra

Match each description on the left with the correct biome on the right. Ground permanently frozen a. chaparral b. savanna c. taiga d. temperate broadleaf forest e. temperate grassland f. tropical rain forest g. arctic tundra

Match each description on the left with the correct biome on the right. Deciduous trees such as hickory and birch a. chaparral b. savanna c. taiga d. temperate broadleaf forest e. temperate grassland f. tropical rain forest g. arctic tundra

Match each description on the left with the correct biome on the right. Limited to small coastal areas a. chaparral b. savanna c. taiga d. temperate broadleaf forest e. temperate grassland f. tropical rain forest g. arctic tundra

Match each description on the left with the correct biome on the right. Spruce, fir, pine, and hemlock trees a. chaparral b. savanna c. taiga d. temperate broadleaf forest e. temperate grassland f. tropical rain forest g. arctic tundra

Match each description on the left with the correct biome on the right. Home of ants, antelopes, and lions a. chaparral b. savanna c. taiga d. temperate broadleaf forest e. temperate grassland f. tropical rain forest g. arctic tundra

Match each description on the left with the correct biome on the right. North American plains a. chaparral b. savanna c. taiga d. temperate broadleaf forest e. temperate grassland f. tropical rain forest g. arctic tundra

Changes in the seasons are caused by a. the tilt of Earth's axis toward or away from the sun. b. annual cycles of temperature and rainfall. c. variation in the distance between Earth and the sun. d. an annual cycle in the sun's energy output.

What makes the Gobi Desert of Asia a desert? a. The growing season there is very short. b. It is hot. c. Temperatures vary little from summer to winter. d. It is dry.

Which of the following sea creatures might be described as a pelagic animal of the aphotic zone? a. a coral reef fish b. an intertidal snail c. a deep-sea squid d. a harbor seal

Why do the tropics and the windward side of mountains receive more rainfall than areas around latitudes \(30^{\circ}\) north and south and the leeward side of mountains? a. Rising warm, moist air cools and drops its moisture as rain. b. Descending air condenses, creating clouds and rain. c. There is more solar radiation in the tropics and on the wind. ward side of mountains. d. Earth's rotation creates seasonal differences in rainfall.

Phytoplankton are the major photosynthesizers in a. the benthic realm of the ocean. b. the ocean photic zone. c. the intertidal zone. d. the aphotic zone of a lake.

An ecologist monitoring the number of gorillas in a wildlife refuge over a five-year period is studying ecology at which level? a. organism b. population c. community d. ecosystem

Aquatic biomes differ in levels of light, nutrients, oxygen, and water movement. These abiotic factors influence the productivity and diversity of freshwater ecosystems. a. Productivity, roughly defined as photosynthetic output, is high in estuaries, coral reefs, and shallow ponds. Describe the abiotic factors that contribute to high productivity in these ecosystems. b. How does extra input of nitrogen and phosphorus (for instance, by fertilizer runoff) affect the productivity of lakes and ponds? Is this nutrient input beneficial for the ecosystem? Explain.

The North American pronghorn looks and acts like the antelopes of Africa. But the pronghorn is the only survivor of a family of mammals restricted to North America. Propose a hypothesis to explain how these widely separated animals came to be so much alike.

In 1954 , workers at Michigan State University began spraying the elm trees on campus annually with DDT to kill disease-carrying bark beetles. In the spring of \(1955,\) large numbers of dead robins were found on the campus. Observers thought perhaps the robins died after eating earthworms contaminated by DDT the previous spring. Suggest how scientists could have investigated the scientific validity of this idea.