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20 Cards in this Set

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  • Back
ecosystem
a community of living things and their environment; the elements of an ecosystem interact with one another
What is an example of a fossil fuel?
coal, natural gas, petroleum...
natural resource
any useful material found in the environment
global warming
a slow increase in Earth's temperature due to the increasing amount of carbon dioxide in the atmosphere
raw material
a resource or material that is still in its natural state, before being processed or manufactured into a useful product
nonrenewable resource
a resource that can not be replaced once it is used; nonrenewable resources include fossil fuels such as coal, oil, and minerals (including iron, copper, and gold)
recyclable resource
a resource that cycles through natural processes in the environment; water, nitrogen, and carbon are recyclable resources
acid rain
rain whose high levels of chemicals can pollute or damage the environment; usually caused by pollutants from the burning of fossil fuels
renewable resource
a natural resource that the environment continues to supply or replace as it is used, such as trees, water, and wind
population
the people living in a particular region; especially the total number of people in an area
recycle
to reuse materials to make new products
fossil fuel
any one several nonrenewable resources such as coal, oil, or natural gas, created from the remains of plants and animals
habitat
the area in which a plant or animal naturally grows or lives
What is an example of a natural resource?
Soil, water, minerals...
greenhouse effect
the effect of amounts of greenhouse gases, such as carbon dioxided build up in the atmosphere; results in global warming
population density
the average number of people living in a given area
deforestation
the process of clearing land of forests and trees, usually to make room for farms and homes
population distribution
how a population is spread over an area
ozone layer
the layer of gas in the upper part of the atmosphere that blocks out most of the sun's harmful ultraviolet rays
What is an example of an ecosystem?
Sahara Desert, Great Plains...