The earliest Homo species was ____
a. Homo erectus
b. Homo sapiens
c. Ardi
d. Lucy
e. Homo habilis
e
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The world production and distribution of food is the result of complex interactions among environmental, technological, political, and economic factors
Indicate whether the statement is true or false.
Magnetic stripes in oceanic basalts are ____________________ and ____________________ around
ocean ridges. Fill in the blank(s) with the appropriate word(s).
You observe a fish-eating osprey bird with its chicks near Everglades National Park. What commonly used pesticide nearly caused the extinction of this and other large predatory bird species in the 1970s?
A) Malathion B) Round Up C) DDT D) Pyrethroids
Burning coal produces pollutants such as ____.
A. carbon monoxide, sulfur dioxide, and soot B. sulfur dioxide and water vapor C. carbon dioxide and cyanide D. soot and argon E. carbon monoxide and water vapor