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- 1. Multiple Choice
The sum total of the variety of organisms in the biosphere
biodiversity
biological magnification
keystone species
- 2. Multiple Choice
Which type of diversity refers to the variety of habitats, communities, and ecological processes in the living world.
ecosystem diversity
genetic diversity
species diversity
- 3. Multiple Choice
Which type of diversity refers to the number of different species in the biosphere
ecosystems diversity
genetic diversity
species diversity
- 4. Multiple Choice
Which type of diversity refers to the sum total of all the different forms of genetic information carried by all the organisms living on Earth today
ecosystem diversity
genetic diversity
species diversity
- 5. Multiple Choice
A species that is critical to the functioning of the ecosystem in which it lives because it affects the survival and abundance of many other species in the community.
biodiversity
keystone species
species diversity
- 6. Multiple Choice
What occurs when a species disappears from all or part of its range?
endangered species
keystone species
extinction
- 7. Multiple Choice
What do we call a species whose population is declining in a way that places it in danger of becoming extinct?
biodiversity
extinct
endangered species
- 8. Multiple Choice
As a population decreases in numbers it ____________ genetic diversity which makes the species even more vulnerable to extinction
gains
loses
- 9. Multiple Choice
What is one of the most serious threats to biodiversity?
smog
ozone depletion
toxic compounds accumulate in animal tissues
- 10. Multiple Choice
What is DDT?
smog
ozone
harmful pesticide
- 11. Multiple Choice
What term is used to describe when concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or food web
biodiversity
biological magnification
keystone species
- 12. Multiple Choice
Which trophic levels are at the highest risk because of biological magnification?
carnivores
producers
herbivores
- 13. Multiple Choice
What term described a species of plant or animal that has migrated to an area where they are not native?
endangered species
invasive species
extinction
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