1. 1 Introduced species often become pests because they
Have a low reproductive rate
Fill only open niches
Are generalists
Have a low genetic variability
Increase biodiversity

2. 2 The biggest threat to biodiversity is Habitat destruction
Invasive species
Population growth
Pollution
Climate change

3. 3
The sale of a large forest to a developer causing the building of roads, logging, and urban development would most likely lead to
An increase in the number of indicator species
Increased biodiversity
A net increase in available biomass
Loss of biodiversity due to habitat fragmentation
Decrease in invasive species

4. 4
Which of the following would prevent invasive species from being introduced and becoming established?
I inspect foreign goods before they enter the country
II allow ships to discharge their ballast water as they enter the port
III establish international treaties banning the transfer of species across borders
I only
II only
I and II only
II and III only
I and III only

5. 5
Which of the following international treaties bans the hunting, capturing, and selling of threatened or endangered species in 172 countries?
Endangered species act
National marine fisheries act
Convention on international trade in endangered species
National environmental policy act
Marine mammal protection act

6. 6
An example in which the species is no longer found anywhere on earth is
Local extinction
Biological extinction
Ecological extinction
Selective termination
Adaptive speciation

7. 7
Most extinction experts believe that the extent of biodiversity loss will increase over the next 50 to 100 years because of
The projected growth of the world’s human population and resource use per person
Increase due to poaching and the demand for endangered species
Reduced input of solar energy cooling the planet and altering the earth’s life
Natural disease processes
Less fragmentation of biodiverse regions

8. 8
The giant panda is prone to ecological and biological extinction because of all of the following reasons EXCEPT
Its low reproductive rate
It has a narrow distribution
It is a specialist
It is rare
It is a top predator

9. 9
DDT was a pesticide that was used universally during the 1950s and 1960s. This chemical entered the food chain and worked its way up, eventually making the eggs of predatory birds so fragile that they could not reproduce successfully. This is an example of
Adaptation
Eutrophication
Biomagnification
Fragmentation
Natural selection

10. 10 Sale of exotic pets and decorative plants
Habitat destruction, degradation, and fragmentation
Invasive (nonnative) species
Population growth and resource use growth
Greenhouse effect
overexploitation

11. 11 Logging, mining, building of roads and urban development
Habitat destruction, degradation, and fragmentation
Invasive (nonnative) species
Population growth and resource use growth
Greenhouse effect
overexploitation

12. 12 No natural predators, generalists, and high reproductive rate
Habitat destruction, degradation, and fragmentation
Invasive (nonnative) species
Population growth and resource use growth
Greenhouse effect
overexploitation