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Ecology Unit 3

WordYour Moms Definition :)
Natural Resource Anything naturally occurring in the environment that humans use. (pg. 88)
Pollution Contamination of Earth's land, water or air. (pg. 89)
Point Source A specific source of pollution that can be identified. (pg. 89, 143)
Nonpoint Source A widely spread source of pollution that is difficult to link to a specific point of origin. (pg. 89, 143)
Environmental Science The study of the natural processes that occur in the environment and how humans can affect them. (pg. 90)
Renewable Resource A resource that is either always available or is naturally replaced in a relatively short time. (pg. 93-94)
Nonrenewable Resource A natural resource that is not replaced in a useful time frame (pg. 94)
Sustainable use The use of a resource in ways that maintain the resource at a certain quality for a certain period of time. (pg. 96)
Ecological footprint The amount of land and water that individuals use to meet their resource needs and to absorb the wastes that they produce. (pg. 96)
Conservation The practice of using less of a resource so that it can last longer. (pg (s). 102-105, 128-133, 97)
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. (pg. 99)
Clear Cutting The process of cutting down all the trees in an area at once. (pg. 104)
Selective Cutting The process of cutting down only some tree species in an area. (pg. 104)
Sustainable yield An amount of renewable resource that can be harvested regularly without reducing the future supply. (pg. 105)
fishery An area with a large population of valuable ocean organisms. (pg. 106)
aquaculture The practice of raising fish and other water-dwelling organisms ot food. (pg. (s) 107, 162)
Biodiversity The total number if different species on Earth, including those on land, in the water, and in the air. (pg.108-117)
Keystone species A species that influences the survival of many other species in an ecosystem. (pg. 109)
Gene A sequence of DNA that determines a trait and is passed from parent to offspring. (pg.112)
Extinction The disappearance of all members of a species from Earth. (pg(s).19, 74, 113, 116)
Endangered Species A species in danger of becoming extinct in the near future. (pg.113)
Threatened species A species that could become endangered in the near future. (pg. 113)
Habitat Destruction The loss of a natural habitat. (pg.114)
Habitat fragmentation The breaking of a habitat into smaller, isolated pieces. (pg.114)
Poaching Illegal killing or removal of wildlife from their habitats. (pg. 114)
Captive Breeding The mating of animals in zoos or wildlife preserves. (pg. 115)
Created by: aem2024000047