Science Chapter 8

Front 1

natural resource

Back 1

materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain.

Front 2

pollution

Back 2

the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects.

Front 3

point source

Back 3

a source of energy, such as light or sound, that can be regarded as having negligible dimensions.

Front 4

nonpoint source

Back 4

a source of pollution that issues from widely distributed or pervasive environmental elements.

Front 5

enviromental science

Back 5

he science of the interactions between the physical, chemical, and biological components of theenvironment

Front 6

renewable resource

Back 6

resource which can replenish to overcome usage and consumption, either through biological reproduction or other naturally recurring processes

Front 7

nonrenewable resource

Back 7

resource of economic value that cannot be readily replaced by naturalmeans on a level equal to its consumption. Most fossil fuels, such as oil, natural gas and coal are considered

Front 8

sustainable use

Back 8

The use of a resource in ways that maintain the resource at a certain quality for a certain period of time

Front 9

ecological footprint

Back 9

the impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources.

Front 10

conservation

Back 10

preservation, protection, or restoration of the natural environment, natural ecosystems, vegetation, and wildlife.

Front 11

exponetial growth

Back 11

growth whose rate becomes ever more rapid in proportion to the growing total number or size.

Front 12

biodiversity

Back 12

the variety of life in the world or in a particular habitat or ecosystem.

Front 13

keystone species

Back 13

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Front 14

gene

Back 14

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

Front 15

extinction

Back 15

the state or process of a species, family, or larger group being or becoming extinct.

Front 16

endangered species

Back 16

A species that has only a few of them left

Front 17

Threatened species

Back 17

A species in danger of dying

Front 18

habitat destruction

Back 18

is the process in which natural habitat is rendered functionally unable to support the species presen

Front 19

habitat fragmentation

Back 19

is the process by which habitat loss results in the division of large, continuous habitats into smaller, more isolated remnants.

Front 20

poaching

Back 20

cook by simmering in a small amount of liquid.

Front 21

captive breeding

Back 21

is the process of breeding animals in controlled environments within well-defined settings, such as wildlife reserves, zoos and other commercial and noncommercial conservation facilities.

Front 22

niche

Back 22

a shallow recess, especially one in a wall to display a statue or other ornament.