Term
| How much has the population increased in the last 35 years? |
|
Definition
| from 2.5 to 6.6 billion(more than doubled) |
|
|
Term
|
Definition
| Use it, but don't use it up |
|
|
Term
|
Definition
| Maximum number of individuals of a species that can be sustained by a population by an environment over a long term |
|
|
Term
|
Definition
| global environment has been profoundly changed by life throughout the history of life on Earth, and that these changes have improved the chances that life on Earth will continue |
|
|
Term
| Principle of Environmental Unity |
|
Definition
| Everything affects everything else |
|
|
Term
|
Definition
| Group of sciences that explain how life on earth is sustained, what leads to environmental problems, and how they're solved. |
|
|
Term
Ulitarian Justification
Ecological Justification
Aesthetic Justification
Moral Justification |
|
Definition
1 Economic/Survival
2 Value larger life suport functions of the environment
3 Beauty
4 Ones view of right and wrong |
|
|
Term
|
Definition
| Set of parts that function together to act as a whole |
|
|
Term
| Things we need to understand to effectively manage natural systems |
|
Definition
Types of disturbances and changes that are likely to occur
The time period which changes occur
The importance of each change to the long-term productivity of the system |
|
|
Term
|
Definition
1)All living things within a given area
2)Region of earth where life exists |
|
|
Term
|
Definition
| A community of organisms and their local nonliving environment in which matter cycles and energy flows |
|
|
Term
|
Definition
- the total area each person requires based on the resources used and the waste produced
•We may be consuming about 20% more of Earth’s biological productivity than is replaced each year |
|
|
Term
|
Definition
| proportion of the population in each age group |
|
|
Term
Limiting factors to population growth
short-term -
intermediate term
long term |
|
Definition
1) drought, energy supply, disease
2)desertification, pollutants,disruption of supply of unrenewable resources
3) soil erosion, climate change, ground water
|
|
|
Term
| Ways to create zero population growth |
|
Definition
Raising the first childbearing age
social pressures to delay marriage
birth control and family planning |
|
|
Term
| Factors affecting carrying capacity |
|
Definition
food supply
land and soul resources
Water resources
Population density
Technology |
|
|
Term
|
Definition
| complete path a chemical takes through the earth's four major reservoirs |
|
|
Term
| What are the earth's four major reservoirs? |
|
Definition
atmosphere
hydrosphere
lithosphere(rocks and soils)
biosphere(plants and animals) |
|
|
Term
|
Definition
| amount that moves between sinks and sources |
|
|
Term
| How many elements are required for life? |
|
Definition
|
|
Term
|
Definition
Formation and change of Earth's materials through physical,chemical and biological processes
Consists of four sub-cycles -tectonic, hydrologic, rock, biogeochemical |
|
|
Term
| How much do plates move a year |
|
Definition
|
|
Term
| What leads to plate movements? |
|
Definition
| convection currents in earth's mantle |
|
|
Term
|
Definition
| one plate being pulled under another |
|
|
Term
| Where is the earth's water? |
|
Definition
| 97% in the oceans, 2% in glaciers, 1% as landwater or atmosphere |
|
|
Term
|
Definition
| area contributing runoff to a stream or river |
|
|
Term
| How much of the earth's water is freshwater? |
|
Definition
|
|
Term
| What % of the earth's atmosphere is nitrogen |
|
Definition
|
|
Term
|
Definition
| converts nitrogen to ammonia/nitrate |
|
|
Term
|
Definition
obligate symbionts - absolutely necessary
facultative symbionts - helpful but not essential |
|
|
Term
|
Definition
habitat - where it lives
niche - what it does for a living |
|
|
Term
|
Definition
|
|
Term
|
Definition
| individuals of various species and their nonliving environment |
|
|
Term
| Ecosystems have 3 fundamentals characteristics |
|
Definition
| structure(living and non living), proccesses and change |
|
|
Term
|
Definition
| producing organic matter within the body |
|
|
Term
|
Definition
| storing some of the newly produced organic matter for future use |
|
|
Term
| what % of the land surface is occupied by agriculture |
|
Definition
|
|
Term
|
Definition
| wealth of species that live on earth |
|
|
Term
| What four processes lead to evolution |
|
Definition
| mutation, genetic drift, natural selection, migration |
|
|
Term
|
Definition
| chemical information for a single characteristic |
|
|
Term
|
Definition
| genetic makeup of an invidual or group |
|
|
Term
|
Definition
| single species evolving into two |
|
|
Term
| Ways in which extinction is caused |
|
Definition
hunting/harvesting
disrupting/destroying habitats
introducing exotic species
pollution |
|
|
Term
primary succession
secondary succession |
|
Definition
1) initial establishment and development of an ecosystem where one did not exist
2)reestablishment of an ecosystem following disturbances |
|
|
