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