Human impact on the environment

• AThey have smaller populations
• BThey are building more factories
• CThey have more renewable resources
• DThey use less energy per person

True or false?

• ATrees grow quickly but forests take centuries to regrow
• BIndividual trees can be replanted and grow again within a few decades, but cutting an entire forest affects the whole ecosystem
• CForests are made of nonrenewable materials
• DTrees are not living organisms

True or false?

• AThe oil needs to be removed from the water
• BThe cleanup should happen as quickly as possible
• CThe cleanup should cost as little as possible
• DThe cleanup should be done without harming wildlife

• AFishing ban imposed on one-third of the Gulf
• BTourism declined
• CReal estate prices declined
• DIncreased job opportunities
• EImproved water quality

• AHabitat destruction from logging has reduced suitable forest for spotted owls, while barred owls are more adaptable.
• BBarred owls are better at hunting than spotted owls, so they outcompete them for food.
• CSpotted owls are more sensitive to climate change than barred owls.
• DBarred owls are more resistant to disease than spotted owls.

• AThe claim is supported because the two populations show opposite trends over time.
• BThe claim is not supported because correlation does not imply causation; other factors like habitat change may affect both.
• CThe claim is supported because barred owls are known predators of spotted owls.
• DThe claim is not supported because the data shows both populations increasing together.

• AIt produces no waste or pollution, but it can cause destruction of habitat if dams are created.
• BIt produces no waste or pollution, but it is expensive to build.
• CIt produces no waste or pollution, but it relies on unpredictable weather.
• DIt produces no waste or pollution, but it uses a nonrenewable resource.

• AKilling plankton at the base of the food web
• BDeclining real estate prices along the Gulf
• CIncreased tourism in the region
• DFishing ban imposed by NOAA on one-third of the Gulf
• EIncreased population of endangered sea turtles

• Deepwater Horizon rig explodes
• Rig sinks and pipe bends, oil begins gushing
• Well is successfully capped
• Relief wells are drilled and the well is declared dead

• AUse the same amount of oil and water in separate containers, apply each method, and measure the amount of oil removed after a set time.
• BUse different amounts of oil in each container to simulate real spills, apply each method, and observe which looks cleanest.
• CApply all methods to the same oil spill in sequence and record observations after each method.
• DUse the same method on different types of oil and measure the time taken for each to be removed.

• ACreation of large unsightly holes in the ground
• BAir pollution from dust and harmful gases
• CContamination of water systems with acid and chemicals
• DIncreased biodiversity due to new habitats
• EFormation of mine dumps that change the landscape

• Explosion on the drilling rig kills 11 workers
• The drill rig sinks and oil begins to gush from the well
• Efforts to cap the well fail
• The well is successfully capped
• Relief wells are drilled and the well is declared dead

• AA container with oil, bacteria, and no dispersant
• BA container with oil, dispersant, and no bacteria
• CA container with only oil and water
• DA container with bacteria and dispersant but no oil

• AOpen pit mining
• BUnderground mining
• CShaft mining
• DPlacer mining

True or false?

True or false?

Resources that are unlimited or can be replenished by natural processes about as quickly as humans use them are called ____ resources.

Mining activities produce ____ dioxide, which contributes to air pollution.

Floating ____ are placed on the surface offshore to trap oil, but they are only effective in calm water.

Renewable resources have an ____ supply, while nonrenewable resources have a ____ supply.

• A45 years
• B60 years
• C50 years
• D55 years

• A5390000 barrels
• B4410000 barrels
• C4900000 barrels
• D5880000 barrels

• ABluebirds nesting in the boxes eat crop-damaging insects, so farmers can rely less on pesticides.
• BBluebirds nesting in the boxes pollinate the crops that would otherwise need to be pollinated by hand.
• CBluebird boxes are cheaper to buy and maintain than pesticides, so farmers save money.
• DBluebird boxes attract other birds that scare people away from spraying pesticides.

• ASalt washed off the road can run into the reservoir and contaminate the drinking water and nearby wells.
• BSalt has little effect on water quality because organisms need a certain amount of salt anyway.
• CSalt kills plants near the reservoir, which increases the amount of water available for human use.
• DSalt has no effect on water quality because salt and water do not react with each other.