The U.S. government created Superfund to deal with
A. high-level radioactive waste disposal.
B. municipal solid waste disposal.
C. municipal sewage treatment.
D. toxic-waste site cleanup.
Answer: D
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The cousin of which scientist worked out the first rough chart of the Gulf Stream?
A) ?Charles Darwin B) ?Edward Forbes C) ?John Murray D) ?Benjamin Franklin
The scientific peer-review process ensures that
A) scientific studies have proper design and methods and are free from bias. B) all scientific studies receive publication despite the level of bias. C) the results of scientific studies are permanent and certain. D) all published scientific studies have clearly defined control groups.
In closed loop recycling, ________
A) a material is recycled into a different product B) materials are incinerated without first recovering what is recyclable C) the product is made from another type of material and discarded after use D) materials are recycled an infinite number of times E) the product is reused to produce a similar product
In some areas, cattle on an open range may compact fragile soils while grazing. This can damage plant roots, leading to fewer, smaller plants, which may in turn cause cattle to graze more and work harder to obtain food
This is an example of a ________. A) food web B) dynamic equilibrium C) negative feedback loop D) homeostatic system E) positive feedback loop