Thick sheets of ice advanced over North America as far south as New York as recently as ____
a. ?1816 ("the year without a summer")
b. ?1550
c. ?18,000 to 22,000 years ago
d. ?1,000 to 2,000 years ago
e. ?2 million years ago
ANSWER: c
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The type of cell division in which resulting cells contain one chromosome from each pair is called ____________________
Fill in the blank(s) with correct word
Instructions: Choose one answer from each pair of selections. To see a sundog or halo, it is important that the cloud be composed of ICE CRYSTALS | WATER VAPOR
Which of the following groups is most likely to disrupt local ecosystems as they search for natural resources and manufacturing sites?
A) governments B) transnational firms C) indigenous ethnic groups D) international organizations, such as the United Nations E) non-governmental organizations, such as Greenpeace
In which of these four lakes is the water table above the land surface?
A. 2 and 3 B. 1 and 2 C. 1 and 4 D. 3 and 4 E. None of these choices are correct.