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Chapter 16

Human Impact on Ecosystems

TermDefinition
Nonrenewable Resources resources that are used faster than they form
Renewable Resources resources that cannot be used up or can replenish themselves over time
Ecological footprint the amount of land necessary to produce and maintain enough food and water, shelter, energy, and waste
Pollution any undesirable factor that is added to the air, water, or soil
Smog a type of air pollution caused by the interaction of sunlight with pollutants produced by fossil fuel emmision
Particulates microscopic bits of dust, metal, and unburned fuel
Acid Rain type of precipitation produced when pollutants in the water cycle cause rain pH to drop below normal levels
Greenhouse effect occurs when carbon dioxide, water, and methane molecules absorb energy reradiated by Earth's surface and slow the release of this energy from Earth's atmosphere
Global warming the trend of increasing global temperatures
Indicator species the species that provides a sign of the quality of the ecosystems environmental conditions
Biomagnification when a pollutant moves up the food chain as predators eat prey, accumulating in higher concentrations in the bodies of protectors
Habitat Fragmentation when a barrier forms that prevents an organism from accessing its entire home range
Introduced species any organism that was brought to an ecosystem as the result of human actions
Sustainable development practice in which natural resources are used and managed in a way that meets current needs without hurting future generations
Umbrella species its protection means a wide range of other species will also be protected
Created by: tuohybio1415