Some students on a biology field trip were sitting around watching honey bees. 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. Other students suggested that some flowers may have sweeter nectar. These speculations about bee behavior are examples of A) data.
B) bias.
C) theories.
D) hypotheses.
D
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A strong trough in a Rossby wave occurs when the jet stream
A) bends away from the poles. B) bends toward the poles. C) does not bend but maintains an east to west flow. D) does not bend but maintains a west to east flow.
What is the zone between Earth's core and crust?
A)innersphere B)lithosphere C)mantle D)convection center E)molten zone
Why does the text say there is a greater density and cultural diversity of Native Americans living in California, than in the rest of North America, prior to European contact?
A) A greater number of tribal conflicts caused groups to split and become isolated. B) The mild climate and rich diversity of resources. C) Past periods of disease forced isolation between many groups that led to cultural uniqueness. D) The flat terrain and lack of wetlands in the Central Valley drew many Native American immigrants from the surrounding Aztec, Mayan, Great Basin and Puget Sound tribes.
Widely distributed or cosmopolitan species include Homo sapiens, bats, rats, and goats.
a. true b. false