Which type of mining is likely the least harmful to the environment?a.surface miningb.placer miningc.subsurface miningd.none of the above
The defining characteristic of potable water is that it _______.a.is used as tap waterb.can be used for washing and irrigationc.can be used and consumed without riskd.is delivered through pipes
How do trees interact with other organisms? a. They provide mammals with food. b. They receive shelter from insects. c. They obtain food from other plants. d. All of the above Please select the best answer from the choices provided
Biological pest control involves _______. a. eliminating pests with pesticides b. using biological mechanisms to eliminate pests c. planting a new crop every year d. burning crops Please select the best answer from the choices provided
Which of the following best explains why clear-cutting forests is more destructive than selectively cutting down trees in forests? a. Clear-cutting eliminates all trees leaving none behind to maintain soil fertility or house native animals. b. Clear-cutting places the land at greater risk for wildfires. c. Clear-cutting makes land more attractive for human development. d. Clear-cutting causes less soil erosion than selective cutting. Please select the best answer from the choices provided
How do organic farming practices relate to soil health?a.Organic farmers rely on soil health for good crop production.b.Organic farmers rely on the interaction between soil microbes and organic matter.c.Organic farmers avoid the use of pesticides and chemicals.d.all of the above
Why is volcanic soil (andisol) very fertile?a.It is rich in minerals from volcanic deposits.b.It is a young soil with low water retention.c.It has been leached of mineral nutrients.d.Volcanic activity warms the soil.
Which of the following is not an effect of erosion on lakes?a.water leakageb.wearing away of sidesc.increased water levelsd.basin filling with sediment
Water would be considered a(n) _______. a. potential renewable resource b. potential nonrenewable resource c. actual renewable resource d. actual nonrenewable resource Please select the best answer from the choices provided
The nuclear accident at Chernobyl was _______ than the accident at Three Mile Island.a.more devastating b.less devastatingc.equally devastatingd.less publicized
Which of the following is an example of a nonmetallic mineral?a.sulfurb.leadc.aluminumd.gold
Which layer of soil is least likely to be penetrated by plant roots?a.O (organic matter)b.A (topsoil)c.B (subsoil)d.C (parent rock)
What is the main reason that people are hesitant to use nuclear energy?a.It produces radioactive waste.b.It uses large amounts of water.c.The ore used for nuclear energy must be mined.d.It is more damaging to natural habitats than the use of coal.
Which of the following is not a component of soil?a.organic materialb.mineralsc.gasesd.none of the above
Which of the following statements about human impact on trees is true?a.Human activity always has a negative impact on trees.b.All human uses of trees require destruction of the trees.c.Human activity has had both a positive and negative impact on trees.d.Cutting down trees is the only activity that has a negative impact on trees.
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