Module 6 quiz

The species-area relationship suggests that if 90% of the habitat of a terrestrial species is lost, then ________

50% of the species utilizing the area will go extinct

The ocean covers______ of the earths surface

71%

Large terrestrial regions characterized by a particular type of climate and a certain combination of dominant plant life are called

Biomes

The decline in approximately 70% of the worlds bird species is particularly alarming to scientists because

Birds are excellent environmental indicators

An endangered species is best described as any species that

Could soon be extinct

An_______ is an extremely hot fire that leaps from treetop to treetop, burning whole trees

Crown fire

The rain shadow effect refers to

Drier conditions on the leeward (facing away from the wind) side of mountain ranges

The transition zone between two ecosystems of biomes is called an

Ecotone

Tropical forests in the Amazon and other South American countries are cleared or burned primarily

For cattle grazing and large soybean plantations

The endangered species act was designed to

Identify and protect endangered species in the United States and abroad

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

Inner core

Establishing international treaties that ban the transfer of potentially harmful species from one country to another is a good way to control

Invasive species

What is the best way to reduce threats from invasive species?

Prevention

What could governments do regarding deforestation to be consistent with the full-cost pricing principle of sustainability?

Replace subsidies/tax breaks that encourage deforestation with forest-sustaining economic rewards.

Strips of vegetation along streams or rivers are called

Riparian zones

When trees in an area have been removed by human activities, such as clear cutting, or natural resources, such as fires and hurricanes, which type of forest develops naturally if there is no further human interference?

Second-growth forest

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

Much of which biome has disappeared from the earth because it has been converted to farmland for growing crops and grazing cattle?

Temperate grassland

Ocean acidification is the result of

The ocean absorbing carbon dioxide from the atmosphere

The equator is warmer than the poles because

The suns rays strike directly at the equator

The greatest threat to species habitat is

Tropical deforestation