Many synthetic organic chemicals are concentrated in the fat of carnivores because
A) the chemicals are non-biodegradable or persistent and highly soluble in lipids.
B) the chemicals are highly soluble in water.
C) these animals eliminate toxins from the body by storing them in fat.
D) fat is able to break down toxins more effectively than the liver.
A
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The theory of continental drift was enthusiastically accepted in both the scientific and lay communities when proposed by Wegener.
a. true b. false
The stratigraphic sequence of an ophiolite assemblage from top to bottom is ____
a. deep-sea sediments, pillow basalts, sheeted dikes, gabbro, serpentinite b. pillow basalts, deep-sea sediments, sheeted dikes, gabbro, serpentinite c. deep-sea sediments, sheeted dikes, gabbro, pillow basalts, serpentinite d. serpentinite, gabbro, sheeted dikes, pillow basalts, deep-sea sediments e. serpentinite, sheeted dikes, gabbro, pillow basalts, deep-sea sediments
Anions have gained electrons and so have a
A. neutral charge. B. negative charge. C. positive charge.
Alfred Wegener is well known for hypothesizing that ____
a. Earth's surface is broken into several major lithospheric plates b. the magnetic poles have reversed on occasion during geologic time c. over time, the continents change their geographic position d. the inner core is molten