Quiz 9

____ is characterized by permafrost.

Arctic tundra

Which type of forest is usually a reservoir of biodiversity?

Old-growth

A forested slope is set to be logged. Which method will reduce disturbance, such as erosion and pollution, of a stream at the base of the slope from excess sediment?

Strip-cutting

Which of the following are examples of greenhouse gases?

Water vapor, methane, and carbon dioxide

Based on the information in the text about efforts to conserve elephants in Cambodia, it is apparent that development may cause humans to kill wildlife because ____.

animals may move into developed areas, including farmland, to find food as their habitat is destroyed

Some areas of particular conservation concern are _____, which contain a wide range of species.

biodiversity hotspots

The process of logging that removes all of the trees from an area is called ____.

clear-cutting

Lizards that live in the desert have tough, scaly skin that helps them to ____.

conserve water

Succulent plants are most likely to be found in ____.

dry conditions, such as those in temperate deserts

The transition zone between two ecosystems or biomes is called a(n) ____.

ecotone

Examples of economic services that oceans provide are ____.

food

In the United States, most protected land is found ____.

in Alaska and in the western states

Wolves were successfully reintroduced into Yellowstone National Park after being absent for almost 50 years. The reason that wolves were chosen for this effort was partly that they are a(n) ____.

keystone species

One reason protecting marine biodiversity is difficult is that ____.

much of the damage to the oceans and other bodies of water is not visible to most people

In Indonesia, Malaysia, and other areas of Southeast Asia, tropical forests are being replaced by large ____ plantations.

oil palm

Some animals living in tropical rainforests have stratified niches that are ____ to ____ competition for resources.

specialized; minimize

One explanation for why polar regions are colder than equatorial regions is that ____.

sunlight strikes the polar regions at an angle and spreads out over a much larger area

In terrestrial environments, non-native, invasive species threaten the native populations of plants and animals. In aquatic environments, ____________________.

the same is true

Gray wolves disappeared from Yellowstone National Park because ____.

they were killed by humans

A forest that is known for its year-round uniformly warm temperature is the ____

tropical rainforest