Which glacial deposit would provide the greatest difficulty in excavation?
a. varved clay
b. outwash
c. ablation till
d. lodgement till
d
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Small areas of innovation from which key culture elements diffused to influence surrounding regions are:
A) culture hearths B) culture berths C) culture cores D) culture domains
Savanna grass would most likely be associated with which climate type?
A) tropical rainforest (Af) B) tropical monsoon (Am) C) semi-arid (BS) D) tropical wet-and-dry (Aw)
If darker shades mean higher values, this is most likely a map of
A) wheat production. B) pastoral nomadism. C) plantation agriculture. D) rice production. E) shifting cultivation.
Some students on a biology field trip were sitting around watching honeybees. Some of the students noticed that bees spent more time on some flowers than on other flowers. As they talked about this behavior, the students offered various explanations
Some thought that the bees were avoiding predators on some flowers, while other students suggested that some flowers may have sweeter nectar. These speculations about bee behavior are examples of ________. A) data B) bias C) hypotheses D) theories