Mercury is known to biomagnify in food chains, in the same manner as DDT. Based on your knowledge of biomagnification of DDT, which organism would you expect to contain the most mercury in a contaminated lake?
A) fish-eating birds
B) small fish
C) algae and plants
D) aquatic insects
E) large fish
A
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All the following processes decrease seawater salinity except :
-sea ice melting. -iceberg melting. -river runoff. -evaporation. -precipitation.
Traffic congestion, road deterioration, higher wages paid to maintain current workers are costs that force some firms to look for a new location away from where they once received the benefits from the external economy. These increased costs and search by the firm is a sign of ________.
A. outsourcing B. the multiplier effect C. agglomeration D. deglomeration
Muhammad's successors organized followers into armies that extended the region of Muslim control over an extensive area of Africa, Asia, and Europe
Indicate whether the statement is true or false.
The maximum in daytime surface temperature typically occurs _______ the earth receives its
most intense solar radiation. a. before b. after c. exactly when