Members of a population may be prone to inherit genetic diseases if
B- inbreeding takes place frequently within the population
The fact that organisms are adapted to survive in particular environments helpes to explain why
B- non-native plant species never flourish in new areas
It is often difficult to save individual species because
D- All of the above
What level of biodiversity is most commonly equated with the over concept of biodiversity
B- Species diversity
Many mores species are estimated to exist than the 1.7 million known to science. To which groups, do most of the unknown species belong
Insects
Reasons for preserving Biodiveristy include all of the following except
C- Preventing natural evolution
An endangered species is
A species that has been identified to be likely to become extinct
How did the CITES treaty reduce the slaughter of elephants
B- it banned imports and exports of all ivory worldwide
In what parts of the world are the greatest number of extinctions occuring
Islands, coastal ecosystems, coral reefs and tropical rainforests
What human activities have influenced recent extinction events
D- All of the above
Preserving entire ecosystems rather than individual species is a good conservation strategy because
C- More than one species can be saved
What groups of organisms are most in danger of extinction
D- Both A and B
The human diet has been enriched with native food products such as sweet potatoes, beans, tomatoes and corn that come from
Central and South America
Why are there so many species still unknown to modern science
D- All of the above
The international Union for Conservation of Nature and Natural Resources (IUCN)
C- is a collaboration of about 200 governmental agencies and 700 private conservation groups from around the world
How does preserving biodiversity come into conflict with human interacts
C- Species may represent food or a source of income
Which of the following is not one of the ways in which coral reefs are threatened by human activities?
B- Creation of artificial reefs
How many species are estimated to be living on Earth
About 10 million
Which would be most effective in slowing the loss of biodiversity
C- Creating large parks/preserves in biodiversity hotspots
Where are many critical biodiversity hotspots located?
B- islands, tropical rainforests and coastal areas
THREATENED SPECIES
a species that has been identified to be likely to become endangered in the foreseeable future
BIODIVERSITY
refers to the number and variety of different species in a given area
ECOTOURISM
a form of tourism that supports the conservation and sustainable development of ecologically unique areas
Captive breeding program
breeding species in captivity, with the hope of reintroducing populations to their natural habitats
Poaching
the illegal harvesting of fish, game or other species
Exotic Species
a species that is not native to a particular region
Endemic species
a species that is native to a particular place and that is only found there
Genetic Diversity
refers to all the genes contained within all members of a population
Keystone species
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 and its community
Ecosystem diversity
refers to all the different genes contained within all members of a population
Species diversity
Refers to all the differences between populations of species, as well as between different species
Biodiversity hotspots
the most threatened areas of high species biodiversity on Earth
Extinct species
occurs when the last member of the species dies
Mass extinction
the extinction of many species in a relatively short period of time
Habitat conservation plan
a land use plan that attempts to protect threatened or endangered species across a given area by allowing some tradeoff between harm to the species and additional conservation commitments among cooperating parties
insects
most abundant animal on earth that has a waterproof skeleton, moves and reproduces quickly