The long-term result of irrigation is often to build up a concentration of minerals that lowers the productivity of the soil
Indicate whether the statement is true or false
TRUE
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The bone age of an individual is defined as:
A. the precise age at which secondary centers of ossification form B. the average chronological age at which centers of ossification form and fusion of growth plates takes place C. a fossil human's age at death as determined by x-raying the bones D. none of these
If a society has only two types of religious practitioners, they are usually a shaman healer and a __________
A) priest B) medium C) witch D) sorcerer
Recent theories suggest that the reduction of sexual dimorphism that is evident in H. erectus may be due to the increase in female size to accommodate larger-brained infants
a. True b. False Indicate whether the statement is true or false
A thin-edged fragment removed form a core is called:
a. flakes. b. knappers. c. lithics. d. cores. e. blanks.