Exam 38: Conservation Biology

After reading the paragraphs below, answer the questions that follow. Introduced species are a problem all over the world, and there are many examples in the United States. Several years ago, a fisherman caught a northern snakehead fish in a pond in Crofton, Maryland (a suburb of Washington, DC). Snakeheads are a favorite food of immigrants from China, and live fish can frequently be found in Asian markets. It was suspected that the fish in the Crofton pond were purchased locally and then intentionally released. Snakeheads are top predators, and 90% of the northern snakeheads' diet consists of other fishes. The northern snakehead can breathe out of water and travel short distances (about 100 feet) across land. They also breed rapidly. Females can lay more than 100,000 eggs per year. Juveniles have also been identified in the Potomac River and other rivers in Pennsylvania. -Based on the characteristics of the snakehead described, which of the following is most likely to be a productive strategy to reduce the spread of this species?

The greatest challenge facing the zoned reserve systems of Costa Rica is

After reading the paragraph below, answer the questions that follow. As the climate warms, organisms will shift their population ranges to different areas that are cooler. However, as humans continue to fragment large tracts of land, species will face increasing challenges in adapting their ranges to new climates. For example, movement corridors may not be able to be built if the amount of land needed for a species' range is fragmented due to cities and roads. One alternative to creating movement corridors is called managed relocation. This requires physically moving species to cooler climates. -Which of the following is an advantage of using managed relocation?

You arrive back in the United States after a visit to a foreign country located on another continent. The customs agent stops the person in front of you and confiscates the fruit basket this person is bringing home. Being the knowledgeable person you are, you calmly explain to your enraged fellow traveler that the reason for the detainment is that the fruit basket may be

CO₂ in the atmosphere is absorbed by ________ and converted into biomass.

DDT and mercury

By the year 1980, a wolf species (Canis rufus)once common to the southeastern region of the United States disappeared from all areas except for one small part of eastern Texas. This is an example of

As global temperatures continue to rise, what is a likely outcome?

If wolves were now removed from Yellowstone National Park,

Scientists worry that global warming will result in the oceans

If current trends in global warming continue for the next 50 years, where will the greatest effects of global warming likely be felt?

Which of the following is not an observed effect of global warming on organisms?

The Yellowstone to Yukon Conservation Initiative is a plan to

Global warming is the result of

Sustainable development

Using living organisms to clean up polluted ecosystems is known as

After reading the paragraph below, answer the questions that follow. As the climate warms, organisms will shift their population ranges to different areas that are cooler. However, as humans continue to fragment large tracts of land, species will face increasing challenges in adapting their ranges to new climates. For example, movement corridors may not be able to be built if the amount of land needed for a species' range is fragmented due to cities and roads. One alternative to creating movement corridors is called managed relocation. This requires physically moving species to cooler climates. -Which of the following is a disadvantage of using managed relocation?

One result of Costa Rica's commitment to conservation is that

Greenhouse gases include

The aspect of conservation ecology concerned with returning degraded ecosystems (as nearly as possible)to their natural state is