Exam 9: Sustaining Biodiversity: the Ecosystem Approach

In the United States, about 4.7% of our land is set aside as protected wilderness. The vast majority of that land is in Alaska, which accounts for ____________of the total.

The Wilderness Act passed in 1964 allows the government to

Which type of forest is considered a reservoir of biodiversity?

Political steps that can help reduce the destruction and degradation of tropical forests include all of the following except

A plant called kenaf would help to reduce the pressure to cut trees because its fiber is very useful for

Reintroduction of the wolf eventually reduced attacks on domestic cattle by what other species?

Referring to the scenario in the previous question, respond to this question: Resurgence of the cottonwood forest along the riverbank led to cooler water in certain areas of the river. Cool water contains more oxygen than warm water. How would this cooler water affect the native fish populations in the river?

Wilderness serves as a(n) ____________________ bank.

The hotspots strategy is thought to be a very _____ way to protect much of the earth's remaining biodiversity.

Using the graph pictured below that shows the tons of cod catch in the North Atlantic from 1900 on, match the appropriate letter with the description given. -What point on the graph represents the fish catch after the use of bottom trawlers was established?

In a forest ecosystem, occasional ____________________ fires have a number of ecological benefits.

Using the graph pictured below that shows the tons of cod catch in the North Atlantic from 1900 on, match the appropriate letter with the description given. -What point on the graph represents the year when 20,000 fishermen and fish processors lost their jobs?

All of the following statements about Wangari Maathai's tree planting program in Kenya are true except

Wangari Maathai's Green Belt Movement in Kenya planted a total of ____________________ trees between 1977 and 2005.

Country Area of tropical rain forest (square kilometers) Area of deforestation per year (square kilometers) Annual rate of tropical forest loss A 1,800,000 50,000 B 55,000 3,000 C 22,000 6,000 D 530,000 12,000 E 80,000 700 -Using the above pictured chart, explain which country would gain the most from adopting a debt-for-nature swap?

The zone of a biosphere reserve where there would be little, if any, disturbance from human activities would be the

____________________ contributes to the greenhouse effect by destroying plants that store carbon dioxide.

A process in which grazing cattle are confined with portable fencing to specific small areas for a short time and then moved is called

A program undertaken by the U.S. Forest Service and the National Advertising Council that has helped humans and saved forests is

The majority of deforestation on the planet that has been caused by human activities has occurred since ____________________.