Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
natural resource |
anything naturally occuring in the enviromental |
|
pollution |
contamination of earths water or air |
|
point source |
A specific source of pollution that can be identified |
|
nonpoint source |
A widely spread source of pollution that is difficult to link to a specific point of origin |
|
enviromental science |
The study of the natral processes that can occur in the enviromental and how humans can affect them |
|
renewable resource |
A source that is eiether alaway available or is naturally replaced in a reflectivley short time |
|
sustainable use |
The use of a resource in ways that maintain the resource at a certain quality for a certain period of time |
|
ecological footprint |
The amount of land and water that individuals use to meet their resource needs and to absorb the wastes that they produce |
|
conservation |
The practice of using less of a resource so that it can last longer |
|
exponential growth |
Growth pattern in which individuals in a population reproduce at a constant rate, so that the larger a population gets , the faster it grows |
|
sustainable yield |
An amount of a renewable resource that can be harvested regurarly without reducing the future supply |
|
biodiversity |
The total amount of different species on Earth, including those on land,in water,and in air |
|
keystone species |
A species that influences the survival of many other species in a ecosystem |
|
gene |
A sequence of DNA that determines a trait and is passed from parent to offspring |
|
nonrenewable source |
A natural source that is not replaced in a useful time frame |
|
extinction |
The disappearence of all members of a species from Earth |
|
endangered species |
A species in danger of becoming extinct in the near future |
|
thearthened species |
A species in danger of becoming extinct in the near future |
|
habitat destruction |
The loss of a natural habitat |
|
habitat fragmention |
The breaking of a habitat into smaller,isolated pieces |
|
poaching |
lliegal killing or removal of wildlife from their habitats |
|
captive breeding |
The mating of animals in zoos or wildlife preserves |