Human Resource Use - Middle School Earth and Space Science
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Which term means meeting resource needs while maintaining availability for the future?
Which term means meeting resource needs while maintaining availability for the future?
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Sustainable use. Balances current needs with long-term resource preservation.
Sustainable use. Balances current needs with long-term resource preservation.
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What is overfishing?
What is overfishing?
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Catching fish faster than populations can reproduce. Depletes fish stocks below sustainable levels.
Catching fish faster than populations can reproduce. Depletes fish stocks below sustainable levels.
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Identify the practice that increases future metal availability by reusing existing materials.
Identify the practice that increases future metal availability by reusing existing materials.
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Recycling. Reduces need to extract new raw materials from Earth.
Recycling. Reduces need to extract new raw materials from Earth.
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What is conservation in the context of resource availability?
What is conservation in the context of resource availability?
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Reducing use to slow depletion and maintain supplies. Using less preserves resources for the future.
Reducing use to slow depletion and maintain supplies. Using less preserves resources for the future.
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What is ore grade?
What is ore grade?
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The concentration of valuable mineral in rock. Higher grade means more metal per ton of rock mined.
The concentration of valuable mineral in rock. Higher grade means more metal per ton of rock mined.
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What usually happens to remaining deposits as a nonrenewable resource is extracted over time?
What usually happens to remaining deposits as a nonrenewable resource is extracted over time?
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Remaining deposits tend to be harder to reach and lower quality. Easy deposits extracted first, leaving difficult ones.
Remaining deposits tend to be harder to reach and lower quality. Easy deposits extracted first, leaving difficult ones.
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What is the main way recycling affects resource availability?
What is the main way recycling affects resource availability?
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It reduces demand for new extraction, extending supplies. Reusing materials means less virgin resource needed.
It reduces demand for new extraction, extending supplies. Reusing materials means less virgin resource needed.
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Which practice most directly increases future timber availability: clear-cutting or replanting trees?
Which practice most directly increases future timber availability: clear-cutting or replanting trees?
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Replanting trees. Creates new forest resources for future harvest.
Replanting trees. Creates new forest resources for future harvest.
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Identify the correct conclusion: If extraction increases while new discovery stays constant, what happens to time until depletion?
Identify the correct conclusion: If extraction increases while new discovery stays constant, what happens to time until depletion?
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Time until depletion decreases. Faster use without new finds means quicker depletion.
Time until depletion decreases. Faster use without new finds means quicker depletion.
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Which option best indicates unsustainable groundwater use: wells deepen each year or water table rises each year?
Which option best indicates unsustainable groundwater use: wells deepen each year or water table rises each year?
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Wells deepen each year. Deeper wells show water table is dropping from overuse.
Wells deepen each year. Deeper wells show water table is dropping from overuse.
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Identify the best inference: If ore grade declines, does the amount of rock needed per unit metal increase or decrease?
Identify the best inference: If ore grade declines, does the amount of rock needed per unit metal increase or decrease?
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Increase. Lower grade ore requires processing more rock for same metal.
Increase. Lower grade ore requires processing more rock for same metal.
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Identify the term for using a resource faster than it can naturally replenish.
Identify the term for using a resource faster than it can naturally replenish.
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Overexploitation. Excessive use depletes resources beyond recovery rates.
Overexploitation. Excessive use depletes resources beyond recovery rates.
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What is the most direct way mining can reduce future mineral availability at a site?
What is the most direct way mining can reduce future mineral availability at a site?
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It removes the ore, lowering remaining reserves. Mining physically depletes finite mineral deposits.
It removes the ore, lowering remaining reserves. Mining physically depletes finite mineral deposits.
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Which change in resource availability is most directly caused by overfishing?
Which change in resource availability is most directly caused by overfishing?
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Decreased fish population available for harvest. Overfishing depletes fish stocks faster than reproduction.
Decreased fish population available for harvest. Overfishing depletes fish stocks faster than reproduction.
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What does resource availability mean in the context of human use?
What does resource availability mean in the context of human use?
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How much of a resource is accessible and usable at a given time. Depends on quantity, quality, and extraction feasibility.
How much of a resource is accessible and usable at a given time. Depends on quantity, quality, and extraction feasibility.
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Which term means using a resource faster than it can be replaced or replenished?
Which term means using a resource faster than it can be replaced or replenished?
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Overexploitation. Consumption exceeds natural regeneration rates.
Overexploitation. Consumption exceeds natural regeneration rates.
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What is depletion as it relates to nonrenewable resources such as fossil fuels?
What is depletion as it relates to nonrenewable resources such as fossil fuels?
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A long-term decline in supply caused by extraction and use. Permanent reduction occurs as reserves are consumed.
A long-term decline in supply caused by extraction and use. Permanent reduction occurs as reserves are consumed.
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Identify the main way mining can reduce future mineral availability in an area.
Identify the main way mining can reduce future mineral availability in an area.
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It removes ore, leaving lower-grade deposits that are harder to extract. Best deposits are extracted first, leaving poorer quality.
It removes ore, leaving lower-grade deposits that are harder to extract. Best deposits are extracted first, leaving poorer quality.
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What is a common effect of groundwater pumping on water availability in wells?
What is a common effect of groundwater pumping on water availability in wells?
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Lowering of the water table, reducing accessible water. Pumping faster than recharge causes water levels to drop.
Lowering of the water table, reducing accessible water. Pumping faster than recharge causes water levels to drop.
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Which process can make freshwater less available by allowing seawater to enter an aquifer?
Which process can make freshwater less available by allowing seawater to enter an aquifer?
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Saltwater intrusion. Occurs when freshwater removal creates pressure imbalance.
Saltwater intrusion. Occurs when freshwater removal creates pressure imbalance.
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What is one direct way deforestation changes the availability of forest resources?
What is one direct way deforestation changes the availability of forest resources?
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It reduces the supply of timber and other forest products. Trees take years to regrow after harvest.
It reduces the supply of timber and other forest products. Trees take years to regrow after harvest.
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Which term describes catching fish faster than populations can reproduce?
Which term describes catching fish faster than populations can reproduce?
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Overfishing. Depletes breeding stock, preventing population recovery.
Overfishing. Depletes breeding stock, preventing population recovery.
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What is a major way oil and gas extraction can reduce future availability of the resource?
What is a major way oil and gas extraction can reduce future availability of the resource?
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It decreases remaining reserves in the reservoir over time. Each barrel extracted is one less available for future.
It decreases remaining reserves in the reservoir over time. Each barrel extracted is one less available for future.
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Which option best describes how pollution can reduce resource availability?
Which option best describes how pollution can reduce resource availability?
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It can make a resource unusable even if it still exists in the environment. Contamination prevents safe use despite physical presence.
It can make a resource unusable even if it still exists in the environment. Contamination prevents safe use despite physical presence.
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What is the relationship between extraction rate and depletion for nonrenewable resources?
What is the relationship between extraction rate and depletion for nonrenewable resources?
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Higher extraction rates generally cause faster depletion. More extraction per year means reserves empty sooner.
Higher extraction rates generally cause faster depletion. More extraction per year means reserves empty sooner.
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