Human ancestors developed the tendency to walk on two legs instead of four in order to accommodate ________
A) riding elephants
B) hunting and gathering food in grasslands
C) picking fruit
D) climbing trees in the forests
E) running across hot ash beds in Tanzania
B
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In what ways are the federal systems of Canada and the United States similar? In what ways are they different?
What will be an ideal response?
Compare and contrast the Darwin-Wallace mechanisms of natural selection and evolution with
Lamarck’s theory of inheritance of acquired characteristics. Explain how both of these concepts might apply to the development of long necks in giraffes. What will be an ideal response?
Humans often manipulate the environment in ways that decrease the overall ecosystem capital because
A) short-term gains are often local, while long-term losses in regulating and cultural services are experienced regionally. B) short-term gains are often regional, while long-term losses in regulating and cultural services are experienced locally. C) long-term gains are often local, while short-term losses in regulating and cultural services are experienced regionally. D) long-term gains are often regional, while short-term losses in regulating and cultural services are experienced locally.
What is the critical physical factor that allows a supervolcano to begin forming?
What will be an ideal response?