Although Homo erectus migrated outside of Africa, some scientists believe that modern humans evolved in one
African location, and then migrated from Africa.
a. True
b. False
True
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What influences contour currents?
a. Salinity b. Density c. Topography d. Trade winds
Using the map of U.S. topography (Figure 5), locate and label the Great Lakes. (Note: Acronyms — words made from the first letters of a list of words — often help us remember a list of words. An acronym to help remember the Great Lakes is H-O-M-E-S.) What will be an ideal response?
What is the difference between "frozen dew" and "frost"?
Which of the following best describes most ecosystems?
A) They are sharply divided from other ecosystems. B) They consist of two or more distinct landscapes. C) They grade into other ecosystems in regions called ecotones. D) They are clustered with other ecosystems to form communities.