Exam 51: Ecology and the Biosphere

Most deserts occur near ____ latitude because of the presence of dry descending air masses.

The Gulf Stream takes relatively cold water toward northwestern Europe.

Stands of white spruce and balsam fir dominate North America's ____.

-Answer the question using the accompanying figure. According to the graph, which biome is defined as having the highest overall mean annual precipitation?

In streams flowing through dense forest, ____; therefore, nutrients from organic detritus are particularly important.

Coastal regions where seawater mixes with fresh water from rivers, streams, and runoff are called ____.

Monsoon cycles are a result of_____. proximity to the ocean

A rain shadow is created when ____.

A climograph portrays the particular combination of temperature and rainfall conditions in each terrestrial biome.

Dissolved oxygen is highest in which body of water?

Where does most photosynthesis occur in the open ocean?

Permafrost is a major repository of ____ in the environment.

According to Hertz and Huey, which compensatory mechanism allows lizards living at high altitudes to survive lower mean air temperatures?

Where do cold ocean currents generally occur?

Which physiological process allows many organisms to maintain relatively constant conditions within their cells and tissues?

The ____ includes all of the water on Earth.

Describe the five levels of ecological organization in the context of the biosphere and biomes.

-Answer the question using the accompanying figure. Letter "C" in the diagram represents the ____ zone.

Most ocean currents flow clockwise in the Northern Hemisphere.