which is not apart of the earth's interior concentric zones
the earth zone with the most volume and mass is the
what is the source of most nonrenewable resources we use
what was the most important volcanic eruption in north america in recent times
mt st helens 1980
lava is an example of
sandstone is not
a type of igneous rock
what is formed from compacted shells and skeletons
what is formed from compacted plant remains
slate, anthracite, marble are
subsurface mining_____ than surface mining
is more dangerous
compared to subsurface mining, surface mining
disturbs more land
extracting, processing, and using mineral resources
requires large amounts of energy, causes land disturbance and erosion, produces solid and hazardous wastes, releases toxic chemicals into the atmosphere
depletion time is the time it takes to use about _____ of the mineral reserves at a given rate
a depletion curve is typically used to
project the depletion time for a resource
recycling, reusing, and reducing causes
a depletion curve to not peak as soon
depletion time can be extended by
recycling, reusing, and reducing,
US gets its metals from
a magnitude over 9
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