What is the term desribing an increase in concentration of toxic substances in organisms at increasing trophic levels
A. Biomagnification
B. Primary Productivity
C. Predation
D. Bioremediation
Answer: A. Biomagnification
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Igneous rock that are silica-deficient but high in iron and magnesium are called:
a) felsic/silicic b) intermediate c) mafic d) magnetic e) ironic
When viewed from above, tropical cyclones rotate ____ in the Southern Hemisphere
A) clockwise B) counterclockwise C) in either direction depending on the storm D) poleward
Compounds are ________
A) molecules that are made of more than one element B) atoms that are radioactive C) atoms that are electrically charged D) molecules that are held together by atoms E) molecules that have mass
In which of the following classes of organic compounds must there be at least two oxygen atoms?
A) carboxylic acids B) carboxylic esters C) both a and b D) neither a nor b