Exam 29: Earths Diverse Ecosystems

If global warming raises sea levels rapidly due to the melting of glaciers but does not change water temperatures, what will likely be the direct effect on coral reefs throughout the world?

A region that has grasses as the dominant vegetation form, widely spaced trees and thorny shrubs, and a pronounced dry season is a ________.

Earth's ozone layer is extremely important because it:

-What biome would you expect to find at 60° N latitude and elevations of 2,000 meters?

The thick, green stems and spike-like leaves of cacti and euphorbias are adaptations to:

Oligotrophic lakes are characterized by:

What are the main factors that determine the locations of terrestrial biomes?

Which biome probably contains the largest number and most diverse group of large mammals?

List one of the two geographical characteristics of most deserts.

________ is the year-round layer of frozen soil that limits the growth of trees and other deep-rooted plants.

The destruction of the ozone layer is caused by a chemical reaction between UV light and:

In an attempt to stop desertification, some groups have changed the way they work with the land. They plant trees to stop erosion, build small barriers to slow water runoff on slopes, and bring food to their animals rather than letting them graze freely. Why would these techniques help stop desertification?

Both the taiga and the temperate rain forest are dominated by evergreen vegetation. What are the reasons in each biome?

A rain shadow is caused by:

The deep ocean floor lacks established communities because it doesn't have enough light to support any producers. True or False?

In a tropical rain forest, the majority of animals are found:

On the basis of nutrient content, a mountain lake with little sediment or nutrients is classified as ________.

Which biome is characterized by widely spaced trees surrounded by grasses?

Why do areas of upwelling tend to have large and diverse populations of organisms?

Why do most of the flowers in a temperate deciduous forest bloom in the spring?