Exam 57: The Biosphere and Human Impacts

Tropical climates are warmer than temperate climates because

If the energy of the sun no longer reached Earth,the primary productivity of which of the following ecosystems would be least affected?

Which of the following adversely affects the ozone layer?

Which of the following statements about ozone depletion are true? Check all that apply.

During an ecology field trip to a lake,your professor asks you to take temperature readings at various depths and record your data.At 5 meters,you note a temperature of 25°C and at 10 meters you record a temperature of 10°C.Readings at 20 meters and below stay fairly consistent around 8°C.The temperature readings of 25°C,10°C,and 8°C represent the

Destruction of which biome would result in the greatest loss of biodiversity?

Which of the following statements about the consequences of global warming are true? Check all that apply.

Which of following statements about the causes and effects of global warming are accurate? Check all that apply.

An old farm that has been abandoned for 65 years is being sold to develop the land for housing.You attend a town meeting and describe this as a bad idea.Your evidence to support this claim relates to the removal of trees to build the homes.You tell the crowd that removal of the trees will limit the number of predators in the area,and therefore allow the local mouse population to increase,and with the mice,an increase in disease.Is basis of your argument true or false?

Which statements about acid precipitation are accurate? Check all that apply.

CO₂ and other gases,which absorb the longer wavelengths of infrared light and radiated heat from Earth,are responsible for causing the

Which of the following are characteristics of biomes? Check all that apply.

Which one of the following marine ecosystems would be expected to have the lowest species diversity and primary production per unit area?

Drifting freely in the upper,well-illuminated waters of the ocean,a diverse biological community exists,primarily consisting of microscopic organisms called

Photosynthetic organisms of the open oceans are confined to the upper

Your biology professor takes the class on a field trip to a local lake.You spend an hour studying the lake and writing down all observations.You hypothesize that the lake is oligotrophic.Which observations would support this hypothesis? Check all that apply.

If the tilt of Earth's axis relative to its plane of orbit was increased to 30 degrees,the seasons in Boston,Massachusetts would become less distinct.

Biomes are broad regional areas with defined flora and fauna.Which one of the following choices correctly identifies the biomes shown plotted in the graph of precipitation versus temperature?

Which of the following are examples of diffuse pollution? Check all that apply.

While visiting the South Island of New Zealand,you notice that conditions vary sharply across the island.The West Coast is very wet and receives between 600 and 1600 mm of rainfall per year,while the East Coast only receives about 640 mm of rain per year and is very dry.What best explains this regional difference in precipitation?