Habitat destruction and fragmentation, Invasive species, Population growth, Pollution, and Overhavesting.
What is HIPPO?
100
The most endangered and species-rich ecosystems.
What are "hot spots"?
100
To learn about connections in nature.
What is the goal of ecology?
100
The type of radiation that is most penetrsting.
What is gamma rays?
100
A gradual move from nomadic hunting-and-gathering groups to settled agricultural communities.
What is the agricultural revolution?
200
Nonnative species that are introduced to new areas causing the lose of biodiversity of native species.
What is invasive species?
200
Land that does not have roads and are only used for camping, hiking, sports fishing, and boating.
What are restricted-use lands?
200
A nonliving organism.
What is an abiotic factor?
200
Nuclear change in which unstable nuclei of atoms spontaneously shoot out "chunks" of mass, energy, or oth at a fixed rate.
What is radioactivity?
200
The use of new sources of energy from fossil fuels and later from nuclear fuels and use of new technologies to grow food and manufacture products.
What is the industrial-medical revolution?
300
Only a temporary depletion of fish stocks as long as depleted areas and fisheries are allowed to recover.
What is commercial extinction?
300
Forests that have been uncut or regenerated forests that have not been seriously disturbed.
What are old-growth forests?
300
Living organisms exist and interact with one another and with their nonliving environment.
What is a biosphere?
300
Nuclear change in which nuclei of certain isotopes with large mass numbers are split apart into lighter nuclei when struck by nuetrons.
What is nuclear fission?
300
Founded the Sierra Club in 1892.
Who is John Muir?
400
Prohibits the transporting of live or dead wild animals or their parts across state borders without a federal permit.
What is the Lacey Act?
400
The exsistance of a species regardless of their use to us.
What is intrinsic value?
400
Large regions characterized by distinct climate and specific species adapted to it.
What is a biome?
400
Nuclear change in which two isotopes of light elements are forced together at high temperatures until it forms heavier nucleaus.
What is nuclear fusion?
400
Established wildlife reserves and more than tripled the size of national forest reserves during his presidency.
Who is Theodore Roosevelt?
500
Convention on International Trade in Endangered Species that helps reduce the international trade of many threatened and/or endangered species.
What is CITES?
500
A stand of trees resulting from secondary ecological succession.
What is a second-growth forest?
500
The range of chemical and physical conditions that must be maintained for populations of a particular species to stay alive and grow, develp, and function normally.
What is the range of tolerance.
500
When energy is changed from one form to another, some useful energy is degraded to a lower quality, more is dispersed and less useful energy.
What is the second law of thermodynamics?
500
Awakened citizens on the harmfulness of DDT to the environment and also wrote the book Silent Spring.