Heavy metals ________
A) are not harmful unless they are directly ingested
B) become less hazardous over time as they degrade chemically
C) become less hazardous after incineration
D) are unregulated by the U.S. government
E) bioaccumulate in animal tissues
E
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The above map best represents
A) colonies and trading patterns of the British Empire. B) today's world core. C) the Silk Road and its trading routes. D) global Internet connectivity. E) the Columbian Exchange.
In which of the following conditions do secondary rainbows occur?
A. when light refracts through a cloud of large raindrops B. when two internal reflections of light occur in raindrops C. when light refracts through ice crystals D. when a single internal reflection of light occurs in raindrops
Depositional landforms are created where energy of the stream __________.
a.) decreases, then increases b.) has increased c.) has decreased d.) has not changed
A ________ is a tabular (thin but large area) intrusive body that is concordant (parallel to the host rock structure).
A. mantle B. threshold C. sill D. neck E. dike